# Calculate the molarity of a solution prepared by dissolving 12.5 grams of NaCl in 250.0 grams of...

## Question:

Calculate the molarity of a solution prepared by dissolving 12.5 grams of NaCl in 250.0 grams of water. Assume the density of the final solution is 1.03 g/mL.

## Molarity of a Solution

Molarity is a measure of the concentration of a certain solute present in the solution. It is expressed in terms of the number of moles per Liter of the solution.

{eq}\rm M=\frac{moles\,solute}{L\,solution} {/eq}

, where the number of moles is equal to the mass of the solute divided by its molar mass.

## Answer and Explanation: 1

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View this answerStep 1: Calculate the moles of NaCl (molar mass of NaCl=58.45 g/mol).

{eq}\rm moles\,NaCl=\frac{12.5\,g}{58.45\,g/mol}=0.214\,mol {/eq}

Step 2:...

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Chapter 8 / Lesson 4What 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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