Problem 41
The solubility of \(\mathrm{KCl}\) at \(20^{\circ} \mathrm{C}\) is \(34.0 \mathrm{~g}\) per \(100 \mathrm{~g}\) of water. What is the maximum amount (in grams) of \(\mathrm{KCl}\) that will dissolve in \(50.0 \mathrm{~g}\) of water at \(20^{\circ} \mathrm{C}\) ?
Problem 42
The solubility of ammonium chloride at \(30^{\circ} \mathrm{C}\) is \(41.1 \mathrm{~g}\) per \(100 \mathrm{~g}\) of water. What is the maximum amount (in grams) of ammonium chloride that will dissolve in \(455.0 \mathrm{~g}\) of water at this temperature?
Problem 43
What is the difference between a saturated solution and an unsaturated solution?
Problem 44
What is the difference between a saturated solution and a supersaturated solution?
Problem 46
The solubility of ammonium chloride increases with temperature. How might you prepare a supersaturated solution of ammonium chloride?
Problem 47
The solubility of \(\mathrm{Ca}(\mathrm{OH})_{2}\) at \(30^{\circ} \mathrm{C}\) is \(0.15 \mathrm{~g}\) per \(100 \mathrm{~g}\) of water. Describe the solution formed when \(1.0 \mathrm{~g} \mathrm{Ca}(\mathrm{OH})_{2}\) is added to \(100.0 \mathrm{~g}\) of water.
Problem 48
The solubility of \(\mathrm{Ca}(\mathrm{OH})_{2}\) is \(0.18 \mathrm{~g}\) per \(100 \mathrm{~g}\) of water at \(10^{\circ} \mathrm{C}\). Describe the solution formed when \(0.15 \mathrm{~g} \mathrm{Ca}(\mathrm{OH})_{2}\) is added to \(100.0 \mathrm{~g}\) of water.
Problem 49
What is the percent-by-mass concentration of \(\mathrm{NaCl}\) in a solution that is prepared by adding \(15.0 \mathrm{~g}\) of \(\mathrm{NaCl}\) to \(90.0 \mathrm{~g}\) of water?
Problem 50
What is the percent-by-mass concentration of sucrose in a solution that is prepared by adding \(25.0 \mathrm{~g}\) of sucrose to \(100.0 \mathrm{~g}\) of water?
Problem 51
What mass of KI is dissolved in \(700.0 \mathrm{~g}\) of a solution that is \(15.0 \%\) KI by mass?
