# what is the molarity of a solution that contains 0.202 mol kcl in 7.98 l solution?

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## What is the molarity of a solution that contains 0.202 mol KCl in 7.98 L solution?

"0.0253 M" Molarity is a measure of a solution's concentration in terms of how many moles of solute it contains per liter of solution. So, in essence, if you have the number of moles of solute, like you do here, and the total volume of the solution expressed in liters, you can find how many moles of solute you get per liter, i.e. the molarity of the solution. Keeping in mind the fact that the moles of solute are distributed evenly in any given volume of the solution, you can say that because "7.98 L" of solution contain 0.202 moles of solute, which in your case is potassium chloride, "KCl", "1 L" of this solution will contain 1 color(red)(cancel(color(black)("L"))) * "0.202 moles KCl"/(7.98color(red)(cancel(color(black)("L")))) = "0.0253 moles KCl" So, if your solution contains 0.0253 moles of potassium chloride per liter, it follows that its molarity is equal to c = color(green)("0.0253 M") Here "M" is equivalent to "mol/L", or molar.

## What is the molarity of a solution that contains 0.202 mol KCl in 7.98 L solution?

Chemistry Solutions Molarity

### 1 Answer

Stefan V. Jan 27, 2016 0.0253 M

### Explanation:

Molarity is a measure of a solution's concentration in terms of how many **moles of solute** it contains **per liter** of solution.

http://www.mhhe.com/physsci/chemistry/chang7/esp/folder_structure/cr/m3/s5/

So, in essence, if you have the number of moles of solute, like you do here, and the total volume of the solution **expressed in liters**, you can find how many moles of solute you get per liter, i.e. the molarity of the solution.

Keeping in mind the fact that the moles of solute are distributed evenly in any given volume of the solution, you can say that because

7.98 L of solution contain 0.202

moles of solute, which in your case is potassium chloride,

KCl , 1 L

of this solution will contain

1 L ⋅ 0.202 moles KCl 7.98 L = 0.0253 moles KCl

So, if your solution contains

0.0253

moles of potassium chloride **per liter**, it follows that its molarity is equal to

c = 0.0253 M Here M is equivalent to mol/L , or molar. Answer link

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## What is the molarity of a solution that contains 0.202 moles of KCl in 7.98 L of solution?

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## What is the molarity of a solution that contains 0.202 moles of KCl in 7.98 L of solution?

What is the molarity of a solution that contains 0.202 moles of KCl in 7.98 L of solution? Question:

What is the molarity of a solution that contains 0.202 moles of KCl in 7.98 L of solution?

## Unit of Molarity:

Molarity is calculated based on two parameters: (1) the number of moles of the solute and (2) the volume of solution in liter scale. Hence, the unit of molarity is expressed as mol/L or M.

## Answer and Explanation:

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In the given solution, KCl is the solute. The number of mol (n) of KCl present in the solution is 0.202 mol. The volume (V) of the solution is 7.98...

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Calculating Molarity and Molality Concentration

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Chapter 8 / Lesson 4

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What is molarity? What is molality? Compare molarity vs molality by viewing molality and molarity formulas, how to calculate molarity and molality, and examples.

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## Chemistry: Concentration of Solutions Flashcards

Study with Quizlet and memorize flashcards terms like You know that mass of solute and the volume of solution. What is the first step in finding the molarity of the solution?, What is the molarity of a solution that contains 0.202 mol KCl in 7.98 L solution?, Which of the following is NOT used in preparing a 0.300 m aqueous solution of NaBr (molar mass = 102.89 g/mol) with 1.00 Kg of solvent? and more.

## Chemistry: Concentration of Solutions

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You know that mass of solute and the volume of solution. What is the first step in finding the molarity of the solution?

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Divide the mass by molar mass to determine number of

moles.

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What is the molarity of a solution that contains 0.202 mol KCl in 7.98 L solution?

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0.0253 M

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### Terms in this set (9)

You know that mass of solute and the volume of solution. What is the first step in finding the molarity of the solution?

Divide the mass by molar mass to determine number of

moles.

What is the molarity of a solution that contains 0.202 mol KCl in 7.98 L solution?

0.0253 M

Which of the following is NOT used in preparing a 0.300 m

aqueous solution of NaBr (molar mass = 102.89 g/mol) with 1.00 Kg of solvent?

0.300 mol water

How many moles of HCl are present in 0.70 L of a 0.33 M HCl solution?

0.23 mol

An NaOH solution contains 1.90 mol of NaOH, and its

concentration is 0.555 M. What is its volume?

3.42 L

What is the molality of a solution that contains 5.10 mol KNO3 in 4.47 kg water?

1.14 m

A 0.15 M solution of HCl reacts with an excess of calcium

carbonate, CaCO3. A volume of 25.0 mL of HCl is used. To

determine the number of moles of CaCl 2 produced, you need to know _____.

the balanced chemical equation for the reaction

Which of the following expresses concentration of a solution?

A molality B molarity

C percent concentration by mass

D all of these are correct

all of these are correct

What is the molarity of a solution that contains 125 g NaCl in 4.00 L of solution?

0.535 M

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