For a 9.20×10−2M solution of H2​ S, calculate both the pH and the S2− ion concentration. State symbols are not shown for water or the aqueous species in the reaction equations. H2​ S+H2​O⇌H3​O++HS−Ka1​=1.0×10−7HS−+H2​O⇌H3​O++S2−Ka2​=1.0×10−19[s2−]=□M​