Chapter 14

A solution is to be prepared that will be $4.50\mathrm{\%}$ by mass calcium chloride. To prepare 175 g of the solution, what mass of calcium chloride will be needed?

How many grams of KBr are contained in $125\mathrm{g}$ of a 6.25\% (by mass) KBr solution?

What mass of each solute is present in $285\mathrm{g}$ of a solution that contains $5.00\mathrm{\%}$ by mass $\mathrm{NaCl}$ and $7.50\mathrm{\%}$ by mass ${\mathrm{Na}}_2{\mathrm{CO}}_3?$

How many grams of ${\mathrm{CuCl}}_2$ are required to prepare 1250. g of a $1.25\mathrm{\%}$ (by mass) ${\mathrm{CuCl}}_2$ solution?

Concentrated nitric acid is sold as a $70.4\mathrm{\%}$ by mass solution. If this solution has a density of $1.42\mathrm{g}/\mathrm{mL}$ what mass of ${\mathrm{HNO}}_3$ is contained in $1.00\mathrm{L}$ of the solution?

A hexane solution contains as impurities $5.2\mathrm{\%}$ (by mass) heptane and $2.9\mathrm{\%}$ (by mass) pentane. Calculate the mass of each component present in $93\mathrm{g}$ of the solution.

A solution that is labeled "0.105 M NaOH" would contain _______ mol of $\mathrm{NaOH}$ per liter of solution.

A solution is labeled "0.121 M AlCl_" How many moles of chloride ion would be contained in $1.00\mathrm{L}$ of the solution?

What is a standard solution? Describe the steps involved in preparing a standard solution.

If you were to prepare exactly $1.00\mathrm{L}$ of a $5\mathrm{M}\mathrm{NaCl}$ solution, you would not need exactly 1.00 L of water. Explain.