Question- A. Calculate the ratio of solubility of Mg(OH)2 dissolved in pure H2O to Mg(OH)2 dissolved in a 0.180M NaOH solution.
B. What is the pH change of a 0.260M solution of citric acid (pKa=4.77) if citrate is added to a concentration of 0.155M with no change in volume?
Give reasons or calculations to sustain your answer.