solutions and solubility (Pre-kab) 29.5; 0 Referring to Figure 1 : a) The solubility of Nad matches that of KC/ at (28 °C t note where the solubility curver for Naul and KC cross and check the corresponding temperature b) NaNO₃ is most soluble at 20°C Cheek which solubility cune appears the highet and the lowest Cez (SO4)3 l is least soluble at 20°C (in terms of the y-axis Solubility at temperature of 20°C at 70°C, " g in H2O c) when when 30g of Nall is mixed in 50 g of water the solution is unsaturated or saturated. Naul at 70°C is about 38 g 1009 >> The solubility of (Figure nach Hence, even more nach can be added to achieve saturation d) At 40°C a beak contains 100g H₂0 and 80g KNO3 Approx. 15g of KNO3 g of kno3 remains undissolved bottom of the beaker. at the > 2 » Looking at figure 1, the solubility of KNO3 at 40°C C is about 65 g KNO3 in 100g H₂O meaning 65 g KNO3 will be dissolved in water at this temperature 80 g- 65 g = 15 g KNO3. remains undissolved -> 12 yo 11
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