100 cm³ of distilled water is saturated with 230g of potassium iodide at 70°C. Calculate the mass of potassium iodide that will be precipitated out from solution, if this solution is then cooled down to 30 °C., where the solubility is 135g/100g of water. Calculate the no. of moles of potassium iodide that precipitated when the solution was cooled to 30 °C. (RAM: K = 39, I = 127).
