Problem 107
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?
Problem 108
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.
Problem 109
What is the molarity of a concentrated HBr solution if the solution is \(48.0 \% \mathrm{HBr}\) by mass and has a density of \(1.50 \mathrm{~g} / \mathrm{mL}\) ?
Problem 110
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?
Problem 111
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
Problem 112
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?
Problem 113
For dilute aqueous solutions, molality and molarity concentration values are similar. Why?
Problem 114
For dilute aqueous solutions, molality and molarity concentration values are similar. Why?
Problem 115
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 \(0.500 M \mathrm{~K}_{2} \mathrm{SO}_{4}\)
Problem 116
What mass of \(\mathrm{NaOH}\) is required to neutralize \(1.8 \mathrm{~L}\) of \(2.0 \mathrm{M} \mathrm{HCl}\) ?
