Step-I: 0.5 L of saturated Mg(OH)2 (aq.) is in contact with Mg(OH)2(s).Step-II: 0.5 L of H2O is added to 0.5 L of solution in step (I) and the solution is vigorously stirred, undissolved Mg(OH)2(s) remains.Step-III: 100 mL of the clear solution in step (II) is removed and added to 0.5 L of 0.1 M HCl(aq.).Step-IV: 25 mL of the clear solution in step (II) is removed and added to 225 mL of 0.06 M MgCl2(aq.) (Ksp,Mg(OH)2=3.2×10−11).Which of the following are correct choices about above steps?

Step-I: 0.5 L of saturated Mg(OH)2 (aq.) is in contact with Mg(OH)2(s)

1.	Step-I: 0.5 L of saturated Mg(OH)2 (aq.) is in contact with Mg(OH)2(s).Step-II: 0.5 L of H2O is added to 0.5 L of solution in step (I) and the solution is vigorously stirred, undissolved Mg(OH)2(s) remains.Step-III: 100 mL of the clear solution in step (II) is removed and added to 0.5 L of 0.1 M HCl(aq.).Step-IV: 25 mL of the clear solution in step (II) is removed and added to 225 mL of 0.06 M MgCl2(aq.) (Ksp,Mg(OH)2=3.2×10−11).Which of the following are correct choices about above steps?
Answer» Step-I: 0.5 L of saturated $M g (O H)_{2}$ (aq.) is in contact with $M g (O H)_{2}$ (s). Step-II: 0.5 L of $H_{2} O$ is added to 0.5 L of solution in step (I) and the solution is vigorously stirred, undissolved $M g (O H)_{2}$ (s) remains. Step-III: 100 mL of the clear solution in step (II) is removed and added to 0.5 L of 0.1 M $H C l$ (aq.). Step-IV: 25 mL of the clear solution in step (II) is removed and added to 225 mL of 0.06 M $M g C l_{2}$ (aq.) $(K_{s p}, M g (O H)_{2} = 3.2 \times 10^{- 11})$ . Which of the following are correct choices about above steps?