Answer Happy

Solubility Curves Graphs of solubility (maximum concentration) against temperature allow quick and easy reference, and are very useful for a wide variety of questions involving solution concentrations. Figure 2 shows some solubility curves for ionic com- pounds in aqueous solution. Solubility of Some lonic Compounds in Water 100 KNO3 90 80 70 60- 50 40 30 20 10 Concentration (g/100 mL) 0 10 20 NH4HCO3 30 NaHCO3 40 50 60 Temperature (°C) KCIO3 70 80 NHẠCI KCI NaCl K₂SO4 90 100

Part A (5 marks) Using graph paper, plot the data below. Refer to Figure 2 on p. 316 of your text for the proper formatting of a graph. Be sure to include Graph #1 in your title. 0 10 20 30 40 50 60 Temp (°C) 70 80 90 100 NH3(g) 90 70 55 45 35 29 23 18 14 10 8 NH4Cl(s) 30 32 35 41 51 56 61 66 72 79 KCIO3(s) 5 6 9 12 18 22 29 36 42 51 60 Kl(s) 127 135 145 n/a n/a n/a n/a n/a n/a n/a n/a NaCl(s) 37 37 37 38 39 39 39.5 39.5 40 40 40 NaNO3(s) 74 80 86 96 105 115 125 135 146 n/a n/a solubility in g/100 g of water LO 5555 46