A chem 101 student dissolves 10.6 g of hydrosulfuric acid (H2S) in 120 mL of water. Calculate the
pH. Ka = 9.1 × 10-8
H2S(aq) + H2O(l) H3O+(aq) + HS-(aq)

 

Calculate the hydronium ion concentration in an aqueous solution of 0.114 M hydrosulfuric acid, H₂S (aq).

[H₃O⁺] = M.

Calculate the concentration of CO₃^2- in an aqueous solution of 0.116 M carbonic acid, H₂CO₃ (aq).

[CO₃^2-] = M.

Calculate the concentration of HS^- in an aqueous solution of 0.0580 M hydrosulfuric acid, H₂S (aq).

[HS^-] = M.

Calculate the concentration of S2^- in an aqueous solution of 4.43×10^-2 M hydrosulfuric acid, H2S (aq). [S2^-] = _______M.