In the following equilibrium reactions, label the stronger acid (SA), the stronger base (SB), the weaker acid (WA), the weaker base (WB),

Question

AND tell whether the equilibrium lies towards the right or the left

HCO3- + H20 ---> H3CO3 + OH-

H2S + CH3COO- ---> HS- + CH3COOH

Answer 1

To tell which is a weaker or stronger acid or base, you need to look up the Ka or pKa values.

HCO₃^- + H₂O ---> H₂CO₃ + OH^-

WA..........WB..........SA.........SB......

Equilibrium will favor the left side of the reaction

H₂S + CH₃COO^- ---> HS^- + CH₃COOH

WA.........WB...............SB..........SA......

Equilibrium will favor the left side of the reaction