91Ó°ÊÓ

The solubility of \(\mathrm{NaCl}\) at \(30^{\circ} \mathrm{C}\) is \(36.3 \mathrm{~g}\) per \(100 \mathrm{~g}\) of water. What mass of \(\mathrm{NaCl}\) is dissolved in a saturated solution that contains \(500.0 \mathrm{~g}\) of water?

The solubility of \(\mathrm{KNO}_{3}\) increases as the temperature rises. If a saturated solution of \(\mathrm{KNO}_{3}\) is heated to a higher temperature, will it still be a saturated solution? Explain.

What is the molarity of a concentrated HBr solution if the solution is \(48.0 \% \mathrm{HBr}\) by mass and has a density of \(1.50 \mathrm{~g} / \mathrm{mL}\) ?

A solution of sulfuric acid contains \(24.0 \%\) by mass of \(\mathrm{H}_{2} \mathrm{SO}_{4}\) and has a density of \(1.17 \mathrm{~g} / \mathrm{mL}\). What is the molarity of \(\mathrm{H}_{2} \mathrm{SO}_{4}\) in this solution?

Which of the following concentration units has values that will not change when the temperature of the solution is changed? Explain your reasoning for each. (a) percent by mass (c) molarity (b) percent by volume (d) molality

A \(1.0 M\) acetic acid solution has a density of \(1.005 \mathrm{~g} / \mathrm{mL}\). What is the molality \((m)\) of this solution?

For dilute aqueous solutions, molality and molarity concentration values are similar. Why?

For dilute aqueous solutions, molality and molarity concentration values are similar. Why?

For each of the following combinations of solutions, determine the mass of barium sulfate, \(\mathrm{BaSO}_{4}\), that should precipitate. (Begin by writing a chemical equation for the reaction.) (a) \(500.0 \mathrm{~mL}\) of \(0.100 M \mathrm{BaCl}_{2}\) and \(90.0 \mathrm{~mL}\) of \(0.500 M\) \(\mathrm{K}_{2} \mathrm{SO}_{4}\) (b) \(100.0 \mathrm{~mL}\) of \(0.100 M \mathrm{BaCl}_{2}\) and \(100.0 \mathrm{~mL}\) of \(0.500 M \mathrm{~K}_{2} \mathrm{SO}_{4}\) (c) \(100.0 \mathrm{~mL}\) of \(0.100 M \mathrm{BaCl}_{2}\) and \(500.0 \mathrm{~mL}\) of \(0.500 M \mathrm{~K}_{2} \mathrm{SO}_{4}\)

What mass of \(\mathrm{NaOH}\) is required to neutralize \(1.8 \mathrm{~L}\) of \(2.0 \mathrm{M} \mathrm{HCl}\) ?