Hydrogen sulfide (H2S) is an odorous gas that can be stripped from solution by gas stripping. The efficiency of the process will strongly depend on the pH of the solution. The equilibrium reaction is: in a pocess similar to ammonia. The reaction is H2S -><- (H+) + (HS-) with equilibrium constant (K_a1) = 0.86 * 10^-7 Find the fraction of H_2*S (ie: H_2*S/(H_2*S) + (HS-) at pH 6 and pH 8