Please answer both of the following:

Q1) A biochemist prepares two stocks of sodium phosphate buffer by titrating phosphoric acid with sodium hydroxide. She prepares a 0.10 M solution of sodium phosphate buffer at pH 2.15, and she prepares a 0.10 M solution of sodium phosphate buffer at pH 7.20. If she mixes 50 mL of the pH 2.15 buffer with 27 mL of the pH 7.20 buffer, what will be the pH of the resulting solution? Recall that the pKas of phosphoric acid are 2.15, 7.20, and 12.35. Enter your answer to the nearest hundredth.

Q2) Imagine that for the reaction A B the equilibrium constant is 14, and that for the reaction B C the equilibrium constant is 25. What is G for the reaction A C if the initial concentrations of A and C are, respectively, 33 mM and 116 mM? Report your answer in kcal/mol to the nearest tenth. Assume that the temperature is 25 C.