please answer C, D and E.

HCO3 = H+ + CO2- The equilibrium constant, K, for the reaction is 10-103 and [H') = 10 mol/L.. a) Find the ratio, at equilibrium, of the molar concentration of carbonate to bicarbonate at 25 C in seawater with an ionic strength of 10 b) Find the pH of the solution. c) Find the ratio, at equilibrium of the molar concentration of carbonate to bicarbonate at 25 C without taking the activity coefficients into account d) What effect does the salinity in seawater has on shells and coral skeletons? e) When we increase the concentration of CO2 in the ocean, more carbonic acid will be formed. Use the reactions in the diagrams to explain why this is affecting calcifying organisms. HCO3 = H+ + CO2- The equilibrium constant, K, for the reaction is 10-103 and [H') = 10 mol/L.. a) Find the ratio, at equilibrium, of the molar concentration of carbonate to bicarbonate at 25 C in seawater with an ionic strength of 10 b) Find the pH of the solution. c) Find the ratio, at equilibrium of the molar concentration of carbonate to bicarbonate at 25 C without taking the activity coefficients into account d) What effect does the salinity in seawater has on shells and coral skeletons? e) When we increase the concentration of CO2 in the ocean, more carbonic acid will be formed. Use the reactions in the diagrams to explain why this is affecting calcifying organisms