Question

The solubility of Caco, in water at 25 °C is measured to be 0.0067 Use this information to calculate Ks, for Cacoz. Round your answer to 2 significant digits.

Answer 1

To find the K for Caca Given that solubility is 0.0067 g/L First convert the solubility g/L tomol/L molarmass of CaCO3 = 100.09 g/mol 0.0067g, Imol = 6.69x10 mol/L 1L 100.09g It will dissociates Caca, Ca2+ +CO2- For every mole of Caco thereis one mole of Ca2+ and 1mole of CO2- Therefore Kg =[ca** [002] K, =[6.69x10-[6.69x10-] Kg = 4.47x10-9 Hence the K for CaCO3 = 4.47x10-||