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Ch.4 - Reactions in Aqueous Solution
Chapter 4, Problem 49

How many milliliters of a 0.350 M KOH solution contain 0.0171 mol of KOH?

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Identify the relationship between moles, molarity, and volume using the formula: \( M = \frac{n}{V} \), where \( M \) is molarity, \( n \) is the number of moles, and \( V \) is the volume in liters.
Rearrange the formula to solve for volume: \( V = \frac{n}{M} \).
Substitute the given values into the equation: \( n = 0.0171 \text{ mol} \) and \( M = 0.350 \text{ M} \).
Calculate the volume in liters using the rearranged formula.
Convert the volume from liters to milliliters by multiplying by 1000, since 1 liter = 1000 milliliters.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Molarity (M)

Molarity is a measure of concentration defined as the number of moles of solute per liter of solution. It is expressed in moles per liter (mol/L). Understanding molarity is essential for calculating the volume of a solution needed to achieve a specific number of moles of solute.
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Stoichiometry

Stoichiometry involves the calculation of reactants and products in chemical reactions. It allows us to relate the amounts of substances involved in a reaction based on their molar ratios. In this context, stoichiometry helps determine how much volume of a solution is required to provide a certain number of moles of solute.
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Volume Calculation

Volume calculation in chemistry often involves using the formula: Volume (L) = Moles of solute / Molarity. This formula allows us to find the volume of a solution needed to contain a specific number of moles of solute, which is crucial for preparing solutions in laboratory settings.
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