Chapter 14

How many moles of the indicated solute does each of the following solutions contain? a. $4.25\mathrm{mL}$ of $0.105\mathrm{M}{\mathrm{CaCl}}_2$ solution b. $11.3\mathrm{mL}$ of $0.405\mathrm{M}$ NaOH solution c. 1.25 L of $12.1M$ HCl solution d. $27.5\mathrm{mL}$ of $1.98\mathrm{M}$ NaCl solution

Calculate the number of moles and the number of grams of the indicated solutes present in each of the following solution samples. a. 127 mL of $0.105M{\mathrm{HNO}}_3$ b. $155\mathrm{mL}$ of $15.1\mathrm{M}{\mathrm{NH}}_3$ c. 2.51 L of $2.01\times {10}^{-3}\mathrm{M}\mathrm{KSCN}$ d. $12.2\mathrm{mL}$ of $2.45\mathrm{M}\mathrm{HCl}$

What mass of the indicated solute does each of the following solutions contain? a. 2.50 L of $13.1M$ HCl solution b. $15.6\mathrm{mL}$ of $0.155\mathrm{M}\mathrm{NaOH}$ solution c. $135\mathrm{mL}$ of $2.01\mathrm{M}{\mathrm{HNO}}_3$ solution d. 4.21 L of $0.515M{\mathrm{CaCl}}_2$ solution

What mass in grams of the indicated solute does each of the following solution samples contain? a. $173\mathrm{mL}$ of $1.24\mathrm{M}$ KBr solution b. 2.04 L of $12.1\mathrm{M}\mathrm{HCl}$ solution c. $25\mathrm{mL}$ of $3.0\mathrm{M}{\mathrm{NH}}_3$ solution d. $125\mathrm{mL}$ of $0.552\mathrm{M}{\mathrm{CaCl}}_2$ solution

What mass of ${\mathrm{KNO}}_3$ is required to prepare $150.\mathrm{mL}$ of $0.250M{\mathrm{KNO}}_3$ solution?

Calculate the number of moles of the indicated ion present in each of the following solutions. a. ${\mathrm{Na}}^{+}$ ion in $1.00\mathrm{L}$ of $0.251\mathrm{M}{\mathrm{Na}}_2{\mathrm{SO}}_4$ solution. b. ${\mathrm{Cl}}^{-}$ ion in 5.50 L of $0.10\mathrm{M}{\mathrm{FeCl}}_3$ solution c. ${\mathrm{NO}}_3^{-}$ ion in $100.\mathrm{mL}$ of $0.55\mathrm{M}\mathrm{Ba}{\left({\mathrm{NO}}_3\right)}_2$ solution d. ${\mathrm{NH}}_4^{+}$ ion in $250.$ mL of $0.350\mathrm{M}{\left({\mathrm{NH}}_4\right)}_2{\mathrm{SO}}_4$ solution

Calculate the number of moles of each ion present in each of the following solutions. a. $10.2\mathrm{mL}$ of $0.451\mathrm{M}{\mathrm{AlCl}}_3$ solution b. 5.51 L of $0.103M{\mathrm{Na}}_3{\mathrm{PO}}_4$ solution c. $1.75\mathrm{mL}$ of $1.25\mathrm{M}{\mathrm{CuCl}}_2$ solution d. $25.2\mathrm{mL}$ of $0.00157\mathrm{M}\mathrm{Ca}(\mathrm{OH}{)}_2$ solution

Sodium hydroxide solutions of different concentrations are needed routinely in most chemistry laboratories. Calculate the masses of NaOH required to prepare 1.00 L each of $0.100,0.500,3.00,$ and $6.00M$ solutions.

Strong acid solutions may have their concentration determined by reaction with measured quantities of standard sodium carbonate solution. What mass of ${\mathrm{Na}}_2{\mathrm{CO}}_3$ is needed to prepare $250.\mathrm{mL}$ of $0.0500\mathrm{M}$ ${\mathrm{Na}}_2{\mathrm{CO}}_3$ solution?

When a concentrated stock solution is diluted to prepare a less concentrated reagent, the number of _____ is the same both before and after the dilution.