what is the ppm of a saturated solution of KNO3 ae answer th

what is the ppm of a saturated solution of KNO3 a(e. answer the questions below. For a-d, answer with either unsaturated saturated with no pure solute present or saturated with pure solute present. Solubility Curves 150 140 130 a. 50g NH&CI; in 100g water at 50°C b. 25g NH&CI; in 50g water at 60°C c. A saturated solution of KCI at 90°C which has o 120 110 100 been cooled to 65°C d. A saturated solution of HCI at 90 C which has e. How many grams of KCIO3 is needed to form a f. Will you need to warm or cool an unsaturated g. At what temperature are the solubilities of 90 been cooled to 65°C 70 NH.C saturated solution in 50g water at 60°C? solution of HCI form a saturated solution? KNO3 and KCI equal? 601 NH, kai 2 50 20 20 10 10 20 30 40 50 60 70 80 90 100 Temperature 40 IPag

Solution

a) From the solubility diagram given, it can be noted that the solubility of ammonium chloride at 50^oC is 50g of the salt in 100g of water. Thus at the given conditions, the solution will be saturated with pure solvent present in the solution.

b) At 60^oC, nearly 55g of ammonium chloride is soluble per 100g of water. If however only 25g is dissolved in it, the solution is unsaturated.

c) A saturated solution of KCl at 90^oC will contain more of the salt than at 65^oC. So if a saturated solution at 90^oC is cooled to 65^oC, the system will be a supersaturated solution with excess of KCl.

d) The solubility of HCl decreases with increasing temperature Thus if a solution is cooled from 90^oC to 65^oC, there will be a lesser quantity of HCl than can be dissolved completely at 65^oC resulting in an unsaturated solution.