(Solved):   1 Use the class results to plot a graph of solubility against temperature. Plot the temper ...

 

1 Use the class results to plot a graph of solubility against temperature. Plot the temperature along the horizontal \( x \)-axis \( \left(0-100^{\circ} \mathrm{C}\right) \). 2 From the graph, predict the solubility of ammonium chloride at \( 20^{\circ} \mathrm{C}, 40^{\circ} \mathrm{C}, 60^{\circ} \mathrm{C} \) and \( 80^{\circ} \mathrm{C} \). 1 Describe what happens to the solubility of ammonium chloride as temperature increases. 2 At the point the crystals first appear, the solution is saturated. What does'saturated' mean? 3 At what temperature would \( 10 \mathrm{~g} \) of ammonium chloride saturate \( 50 \mathrm{~g} \) of water? 4 If a saturated solution of ammonium chloride at \( 90^{\circ} \mathrm{C} \) is cooled to \( 10^{\circ} \mathrm{C} \), how many grams of ammonium chloride would crystallise out of \( 100 \mathrm{~g} \) of water?