Q2 (5 marks) (1) In a closed environment, the water has reached equilibrium with gas. The partial pressure of CO2 in the gas is 0.4atm. Please determine [H2CO3][HCO3][CO32]. (3 marks) (2) If 0.001MNaOCl was dissolved in water, please determine the pH of this aqueous solution at equilibrium. ( 2 marks) Hints: Henry's constant for CO2 at 25C:KH=3.39102M/atm Acid constants of H2CO3 at 25C:pKa1=6.3;pKa2=10.3 Acid constants of HOCl at 25C:pKa=7.49 Kw of water is 1014,[H+][OH]=1014