What is the purpose of an indicator in a titration.

Answers

Answer 1

Answer:

The role of indicator in titration is to detect the endpoint of the titration. When the colour of the solution changes, it indicates that the concentration of the chemical specie has reached a critical range. This change in colour is possible with the help of indicators.

Explanation:

hope it helps

#carry on learning and keep safe

correct me if I'm wrong and if correct brainliest me please

Answer 2
Hence, indicators in a titration are used to identify the equivalence or the end point of a reaction where pH change occurs. Note: Apart from phenolphthalein, methylene orange is also used as an indicator that changes color when pH changes. It has red color in acidic solution, and a yellow color in basic solution.

I hop this helps! :)

Related Questions

what is mass of sodium hydroxide NaOH is present in 0.25 mole of sodium hydroxide
pls be quick​

Answers

Finding molar mass of NaOH

We know that

Molar mass of Sodium (Na) = 23 g/mol

Molar mass of Oxygen (O) = 32 g/mol

Molar mass of Hydrogen (H) = 2 g/mol

So,

Mass of 1 mole of NaOH

=> 1 × 23 + 1 × 16 + 1 × 1

=> 23 + 16 + 1

=> 40 g/mol

Now,

Mass = 40 × 0.25

Mass = 10 g

Calculate the energy of a proton of light with a frequency of 8.5x1014 Hz.

Answers

Answer:

[tex] \huge{5.632 \times {10}^{ - 19} \: J}[/tex]

Explanation:

The energy of the proton can be found by using the formula

E = hf

where

E is the energy in J

f is the frequency in Hz

h is the Planck's constant which is

6.626 × 10-³⁴ Js

From the question we have

E = 6.626 × 10-³⁴ × 8.5 × 10¹⁴

We have the final answer as

[tex]5.632 \times {10}^{ - 19} \:J[/tex]

Hope this helps you

PLEASEEE HELPPPPPPPPPPPPPPPPPP

Answers

It’s 160.325 grams of mol sulfur! Hope this helped :)

50 POINTS PLEASE HELP

2.How many atoms are in 3.35 moles of Aluminum?

3.How many moles of CO2 gas are in a 101.25 L container filled with CO2 gas?

4.What is the mass of 13.7 moles of N2 gas?

Answers

Answer:

2) To find the atoms from the moles, you just multiply Avogadro's number (6.02 x 10^23) by the moles.

So 3.35 x (6.02 x 10^23) = 2.0167 x 10^24 atoms are in 3.35 moles of aluminum

3) If the question is asking under standard temperature and pressure, we know that if we divide the volume by the molar volume of a gas (which is 22.7 in standard temperature and pressure), we can get the moles.  

So 101.25L / 22.7 = 4.46 mol

4) We know that to find the moles, it is the mass divided by the molar mass. If we rearrange the equation to solve for mass, we have to multiply the moles by the molar mass to get there.

Nitrogen's (N) molar mass on the periodic table is 14g/mol, but since Nitrogen is a diatomic element, it would be N2 by itself. So multiply 14 by 2, which will give you 28g/mol. N2's molar mass is 28g/mol.

Now you multiply 13.7 moles by 28g/mol, which will give you 383.6g

Just did a few edits here, 4.46 for question 3 is in moles not L

Taking into account the definition of avogadro's number,

2. 3.35 moles of aluminum contains 2.018ײ⁴ atoms.

3. 4.52 moles of CO₂ gas are in a 101.25 L container filled with CO₂ gas.

4. 13.7 moles of N₂ contain 383.6 grams.  

2. How many atoms are in 3.35 moles of Aluminum?

Avogadro's Number is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023×10²³ particles per mole. Avogadro's number applies to any substance.

Then you can apply the following rule of three: if 1 mole of aluminum contains 6.023×10²³ atoms, then 3.35 moles of aluminum contains how many atoms?

amount of atoms of aluminum= (6.023×10²³ atoms × 3.35 moles)÷ 1 mole

amount of atoms of aluminum=2.018ײ⁴ atoms

Finally, 3.35 moles of aluminum contains 2.018ײ⁴ atoms.

3.How many moles of CO₂ gas are in a 101.25 L container filled with CO₂ gas?

The STP conditions refer to the standard temperature and pressure. Pressure values at 1 atmosphere and temperature at 0 ° C are used and are reference values for gases. And in these conditions 1 mole of any gas occupies an approximate volume of 22.4 liters.

Then, you can apply the following rule of three: If by definition of the STP conditions 1 mole of CO₂ occupies a volume of 22.4 L, how many moles does 101.25 L occupy?

[tex]amount of moles of CO_{2} =\frac{101.25 Lx1 mole of CO_{2} }{22.4 L}[/tex]

amount of moles of CO₂= 4.52 moles

4.52 moles of CO₂ gas are in a 101.25 L container filled with CO₂ gas.

4. What is the mass of 13.7 moles of N₂ gas?

The molar mass of substance is a property defined as its mass per unit quantity of substance, in other words, molar mass is the amount of mass that a substance contains in one mole.

In this case, the molar mass of N₂ is 28 g/mole. So, you can apply the following rule of three:  If 1 mole of N₂ contains 28 grams, 13.7 moles of N₂ contain how much mass?

[tex]mass=\frac{13.7 moles x28 grams}{1 mole}[/tex]

mass= 383.6 grams

13.7 moles of N₂ contain 383.6 grams.

Learn more about

Avogadro's Number: brainly.com/question/11907018?referrer=searchResults brainly.com/question/1445383?referrer=searchResults brainly.com/question/1528951?referrer=searchResultsSTP conditions:brainly.com/question/3773297?referrer=searchResults brainly.com/question/9901446?referrer=searchResults brainly.com/question/12695086?referrer=searchResults brainly.com/question/15507610?referrer=searchResults brainly.com/question/14260169?referrer=searchResults brainly.com/question/14831640?referrer=searchResultsmolar mass:https://brainly.com/question/1145279

If two atoms have very different electronegativities, will this for me ionic bond or a covalent bond

Answers

Answer:

It will be a covalent bond.

Explanation:

When two atoms combine, the difference between their electronegativities is an indication of the type of bond that will form. If the difference between the electronegativities of the two atoms is small, neither atom can take the shared electrons completely away from the other atom and the bond will be covalent.

9. Name the element which has the following numbers of particles:
I

Answers

A. iron

B. iodine

C. Helium

D. calcium

E. lead

F. hydrogen

check your periodic table to see if they are correct

atomic number, proton number and electron are the same

to find neutron = mass number - atomic number

An atom which has 9 protons, 8 neutrons, and 9 electrons will have an atomic mass of how many amu?

a. 6

b. 8

C. 9

d. 17

Answers

Answer:

D

Explanation:

Protons and Neutrons both have a mass of about 1 amu so you add them but electrons have a mass of 0 amu so they are left out.

Question 13 (2 points)

Given the following images, choose the one that most likely represents an M-class star. (2 points)

A

B

с

D

Оа

A

Oь в

Ос

О с с

Od D

Answers

Answer:

b. because its Rigel star

Explanation:

hope itsattachments

name a metal and non metal which are liquid at normal pressure and temperature

Answers

Answer:

metal : Mercury(Hg)

non metal : bromine (Br)

Explanation:

mercury is liquid at room temperature and pressure and the same as bromine

What happens to the atoms in a chemical reaction? Explain with an example​

Answers

It changes the element/atom to a new substance, you can’t reverse the effects of a chemical reaction. Ex. Rust

the expression of potential energy , i.e., P.E.=mgh , where the terms used have their usual meaning​

Answers

Gravitational Potential energy:

The Gravitational potential energy of

an object at a point above the ground

is defined as the work done in raising

it from the ground to that point against

gravity.

Consider an object of mass "m" is raised

to heighth from the ground.

A force is required to do this. the

minimum force required to raise the

object is equal to the weight of the

object[mg]

The object gains energy equal to the

work done on it. Let the work done on

the object against gravity be "w"

WorkDone=W= Force x displacement

=mgxh

..W=mgh

since the workdone on the object is

equal to "mgh" an energy equal to "mgh"

units is gained by object.This is the

potential energy of object at height "h"

.. P.E=mgh

HELP!! Will give brainliness of answered!!
No links!!!!!!

Why does higher temperature increase the reaction rate?
Select one:
The molecules will have higher kinetic energy for higher velocity collisions.

O b. Increasing the temperature causes the reactant molecules to get hotter.

O c. The activation energy will decrease.

O d. Increasing the temperature causes the potential energy in the bonds to decrease.

Check

Answers

Answer:

a

Explanation:

Answer:

Im pretty sure it's B, almost 100% sure

Explanation:

A molecular compound is found to consist of30.4% nitrogen and 69.6% oxygen. Ifthe molecule contains 2 atoms of nitrogen, what is the molar mass of the molecule

Answers

Answer:

92.01 g/mol

Explanation:

So first you need to find the empirical formula by the percents. That would be, assuming that you have 100 grams of the the sample, divide each quantity of each element found by its respective molar mass.

30.4 g of N ÷ 14 g/mol N= 2.17 mol of N

69.6 g of O ÷ 16g/mol= 4.35 mol of O

You can establish now the empirical formula.

N2.17O4.35,

but since you can't have a decimal subscript, you divide each subscript by the minimum subscript

NO2

So then you're said that the molecular formula derived from that empirical formula has 2 nitrogen, so you multiply all the subscripts, by 2:

N2O4

-Dinitrogen Tetraoxide

-Nitrogen oxide (IV)

Then all you have to do is find the molecular mass of the compound using the periodic table and what you obtain is the molar mass.

remember: molecular mass is correspondent to molar mass.

How do you determine the group and period of an element based on its electron configuration?

Answers

Answer:

If you are given with the atomic number of an element you can find it's period number and group number. The period number is related to the number of electron occupied shells in the element and the period number is linked to its valence electrons.

Explanation:

hope it helps luv <3

In one to two sentences, explain how to compare the strength of electrostatic forces between molecules in salt water to the strength of electrostatic forces between molecules in freshwater. Include a description of the data to be collected and how that data would allow one to draw conclusions about the relative strengths of the electrostatic forces in the two substances.

Answers

The boiling point of salt water is greater than that of fresh water hence the electrostatic forces between molecules in salt water is greater than that between the molecules in salt water.

Fresh water contains does not contain dissolved solutes like salt water. Salt water contains a lot of dissolved mineral salts making the salt water to be rich in ions.

Generally, the boiling points of substances can serve as a measure of the strength of electrostatic forces between molecules in either kind of water. We will easily find the that the boiling point of salt water is far higher than that of fresh water indicating greater electrostatic forces between molecules in salt water than between molecules in fresh water.

Learn more about boiling point: https://brainly.com/question/2153588

State two properties of a base

Answers

Answer:

Bases are bitter to taste a bitter taste is characteristic of all bases. Bases may or may not be soluble in water Bases that can dissolve in water are called alkalis.

Explanation:

what is the empirical formula of cinnamaldehyde?​

Answers

C9H8O. .....................

Which of these substances are greenhouse gases? Check all that apply. Oxygen carbon dioxide helium methane nitrous oxide.

Answers

The greenhouse gases are carbon dioxide, methane, and nitrous oxide.

The greenhouse effect has been defined as the entrapment of the sun's energy by the gases that result in the earth becoming warmer and a better place to live.

The gases present in the atmosphere that has been able to entrap the heat energy has been termed the greenhouse gases.

The greenhouse gases have been carbon dioxide, methane, and nitrous oxide.

For more information about  greenhouse gases, refer to the link:

https://brainly.com/question/11595872

Answer:

carbon dioxide, nitrous oxide, methane

Explanation:

11. The ease with which water can pass
through a rock or sediment is called
a. permeability c. porosity.
b. carbonation. d. velocity

Answers

Answer:

It's option a) Permeability.

Most weak bases are:
a. Anions of weak acids
b. Anions of strong acids
C.Cations of weak acids
d. Both A and C

Answers

Answer:

The conjugate base of a very weak acid is stronger than the conjugate base of a strong acid.  

Explanation:

The stronger the acid, the weaker its conjugate base and vice versa  A very weak acid has a very strong conjugate base.

Which of these would describe a dish that contains bits of chocolate and nuts you can see?

homogeneous mixture

compound

heterogeneous mixture

none of the above

Answers

Answer:

mezcla homogénea

Answer:

heterogeneous mixture

Explanation:

you can split the mixture easily with you hands while homogeneous mixtures is dissolved

which of the following describes how ice could have once covered warm places such as australia and india

Answers

Answer:

U shaped vallies?

Explanation:

(i dont know if this was one of the options)

What is the problem with this chemical equation: H2 + O2 → H2O

Answers

h2o only has one oxygen molecule. so +o2 should just be +o

Answer:

To make H2O, you need two H and one O. in this equation, you are given two Os which is too many. you'll end up with an extra O. H2 + O2 -> H2O + O

a ___ wave is a disturbance in matter that transfers energy through the matter.

Answers

The answer is mechanical wave!

Hope this helps!
Brainliest and a like is much appreciated!

Answer:

Mechanical Waves

Silicone is a type of synthetic compound made of silicon, oxygen, and other elements. There are many different kinds of silicone. One kind is a liquid and is commonly used as a lubricant to reduce friction between moving parts. Unlike petroleum-based lubricants, silicone is nontoxic. However, silicone is more expensive than petroleum-based lubricants.

Which of the following would silicone lubricants most likely be used for?

Answers

Explanation:

Liquid-based lubricant

Answer:

study island : food service equipment

Explanation:

You are studying the boiling points of liquids with some fellow students. You have two liquids of different molecular weights, and you test each of them twice. You find that the one with a lower molecular weight also has a lower boiling point. You would like to be more confident with the pattern you are noticing. What are two possible next steps? In one to two sentences, give specific, different examples of how the experiment could be extended, assessed, or improved.

Answers

The boiling points of two or three other pairs of liquids in which one liquid has a lower molecular mass than the other can be studied in order to see if the pattern is consistent.

The boiling point of a substance refers to the temperature at which its vapor pressure is equal to the atmospheric pressure. The boiling point of a substance has a lot to do with its molecular mass.

Generally, substances that has a higher molecular mass has a higher boiling point except other factors at at work. In order to confirm whether the pattern that you are noticing about molecular weights and boiling point is consistent, three other liquids with different molecular masses, one being higher than the other can be studied and their boiling points compared.

Learn more about boiling points: https://brainly.com/question/2153588

which particle diagram shown above best represents the strongest intermolecular force between two ethanol, c2h6o, molecules?

Answers

The strongest intermolecular bonding in ethanol is hydrogen bonding.

Intermolecular forces are the forces that hold two molecules of a substance together in a given state of matter. For ethanol, the strongest intermolecular force is hydrogen bonding.

Hydrogen bonding occurs when hydrogen is directly linked to a highly electronegative element such as oxygen, nitrogen, fluorine or sulfur. The existence of intermolecular hydrogen bonds accounts for unusual properties such as abnormally high melting and boiling points.

Learn more about intermolecular forces: https://brainly.com/question/17111432

Draw the Complete Electron Energy Level Diagram (or the Orbital Diagram) for Ru+3

Answers

Answer:

A

Explanation:

refer to textbook

what is the formula of trinitrogen tetrabromide

Answers

The formula of trinitrogen tetrabromide is N3Br4

How to determine the molecular formula

Trinitrogen features three molecules of nitrogen, N3

Tetrabromide features four molecules of bromide = Br4

Thus, the formula of trinitrogen tetrabromide is N3Br4

Learn more about molecular formula here:

https://brainly.com/question/17405634

#SPJ1

predict the product 1-bromo propane is treated with sodium metal

Answers

When 1-bromo propane is reacted with sodium metal, the propane and sodium bromide are formed.

Propane and sodium bromide are produced when the 1-bromo propane is reacted with sodium metal. The Bromine which is present in the 2-bromopropane is removed through hydrogenation and combines with the sodium metal which results in the production of propane and sodium bromide.So we can conclude that propane and sodium bromide are produced when the 1-bromo propane is reacted with sodium metal.

Learn more about 1-bromo propane here: https://brainly.com/question/25597694

Learn more: https://brainly.com/question/25952418

Other Questions
unusual weight gain or loss and sterility can result from In what ways was the U.S. not ready to enter World War I? Bike crashes are most common when ____. the bicyclists are riding their fixed-gear bicycles. the driver turns in front of the path of a biker. the driver doesn't give a biker the right of way at an intersection. the driver turns in front of the path of a biker OR the driver doesn't give a biker the right of way at an intersection. Submit answer DOES ANYONE KNOW THE AWNSER PLEASE HELP find the number of tiles in the 57th figure. justify your answer using an algebraic expression Help please.. DuE Today. No LiNkS!!Thanks! 8th Grade Mathh Choose the sentence that is written in the active voice:AI am excited by the prospect of living in a foreign country one day.BI am thrilled by the idea of living in a foreign country one day. CThe prospect of potentially living in a foreign country one day excites me.DMy mind has been consumed by the prospect of living abroad lately. Does 30, 40, 45 make a right triangle? 4 divided by 3220 pls help me due in 2 hours Answer the question below based on the passage The Myth of Tantalus. For one glorious evening, he dined happily among his fellow mortals, and it was as though he had actual friends.Based on this sentence, you can conclude that Tantalus Explain the final debate between Lincoln and Douglas. Where did it take place, what points did each try to make, and how many people attended? what challenges have confronted countries in africa south of the sahara since the end of the cold war If a parent gives a child a special privilege every time the child successfully completes five homework assignments, this is an example of a What's the percentage multipier for 0.6%? 1. _________ are things we often do or regularly. A. Careers B. Dangers C. Habits D. Adventures Developing a shared understanding through communication is complex because __________________.a.everyone interprets the world differentlyc.learning to communicate well is too difficultb.no one understands enough words to communicate effectivelyd.all of the abovePlease select the best answer from the choices providedABCD Plz I need help! On these 3 questions! PLS HELP ASAP ILL GIVE BRAINLKEST PLS THANKS Assume that students in a course are required to produce a written report on an ICT-related the topic each semester. If you wanted to create a model to estimate how long it should take a student to complete such an assignment, what measure of work content would you use? Some reports might be more difficult to produce than others: what factors might affect the degree of difficulty? Provide a list of factors and explain each briefly. 6. Find the value of y.516