Question

What will be (HS-) in a 0.1 M H2SO4 solution when 0.05M H2SO4 is added to it?(ka1 & ka2 are dissociated constant of H2S)

Answer 1

Solution:
First of all, for H2SO4, Ka2 is generally not considered, as it is so small compared to Ka1. Thus,
H2SO4 can be considered a strong acid which is completely dissociated when placed in aqueous
solution.
H2S = HS- + H+