HC2H3O2 (aq) + H2O (l) ⇔ C2H3O2- (aq) + H3O+ (aq) Ka = 1.8 x 10-5 Calculate the [H3O+] if the [HC2H3O2] = 0.035 M and the [C2H3O2- ] = 0.22 M.

The concentration of [H3O⁺]=2.86 x 10⁻⁶ M

In general, the weak acid ionization reaction  

HA (aq) ---> H⁺ (aq) + A⁻ (aq)  

Ka's value  

Reaction

HC₂H₃O₂ (aq) + H₂O (l) ⇔  (aq) + H₃O⁺ (aq) Ka = 1.8 x 10⁻⁵

[H₃O⁺]=2.86 x 10⁻⁶ M

can you list the answers so i can answer