Question 1) Which has the greater molar solubility, AgCl with Ksp 1,8 ? 10-10 mol/l or Ag2CrO4 with Ksp 1,1 ? 10-12 mol/l?     Question 2: Calculate the mass of HCl to make 2

Question 1) Which has the greater molar solubility, AgCl with Ksp 1,8 ? 10-10 mol/l or Ag2CrO4 with Ksp 1,1 ? 10-12 mol/l?

Question 2: Calculate the mass of HCl to make 2.50 L of solution with pH = 1.0.

Question 3: Calculate the mass of CH3COOH to make 0.5 L of solution with pH=2.99; Ka=1.74 · 10^-5

Question 4: Calculate the pKa of weak acid, if Ka=1.3 · 10-4 

Question 5: Calculate the pKb of weak base, if Kb=2.0 · 10-6 .

Question 6: What is the pH of a buffer solution made from dissolving 2,0g of benzoic acid C6H5COOH and 5,0g of sodium benzoate C6H5COONa in 250 ml of water? Ka = 6.3 · 10-5 mol/l.