A mixture of 100 mmol of Ca(OH)2 and 2 g of sodium sulphate was dissolved in water and the volume was made up to 100 mL. The mass of calcium sulphate formed and the concentration of OH- in resulting solution, respectively, are:(Molar mass of Ca(OH)2, Na2 SO4, and CaSO4 are 74, 143, and 136 g mol-1 respectively; Ksp of Ca(OH)2 is 5.5 × 10-6)

A mixture of 100 mmol of Ca(OH)2 and 2 g of sodium sulphate was di

1.	A mixture of 100 mmol of Ca(OH)2 and 2 g of sodium sulphate was dissolved in water and the volume was made up to 100 mL. The mass of calcium sulphate formed and the concentration of OH- in resulting solution, respectively, are:(Molar mass of Ca(OH)2, Na2 SO4, and CaSO4 are 74, 143, and 136 g mol-1 respectively; Ksp of Ca(OH)2 is 5.5 × 10-6)
A.	13.6 g, 0.28 mol L-1
B.	1.9 g, 0.28 mol L-1
C.	13.6 g, 0.14 mol L-1
D.	1.9 g, 0.14 mol L-1
Answer» C. 13.6 g, 0.14 mol L-1