Determine whether the forward or reverse reaction is favored

Question

Review the reversible reactions given, along with the associated equilibrium constant K at room temperature. In each case, determine whether the forward or reverse reaction is favored.

1) CH₃COOH ↔ CH₃COO^- + H⁺ K_a=1.8 x 10^-5

²⁾ A+ B ↔ C K=4.9 x 10³

³⁾ Al(OH)₃  ↔ Al³⁺ + 3OH^- K_sp=3.7 x 10^-15

⁴⁾ AgCl ↔ Ag⁺ + Cl^- K_sp=1.6 x 10^-10

Answer 1

1) CH₃COOH ↔ CH₃COO^- + H⁺ K_a=1.8 x 10^-5 Reverse reaction is favored b/c Ka < 1

²⁾ A+ B ↔ C K=4.9 x 10³ Forward reaction is favored b/c Ka > 1

³⁾ Al(OH)₃  ↔ Al³⁺ + 3OH^- K_sp=3.7 x 10^-15 Reverser reaction is favored b/c Ka < 1

⁴⁾ AgCl ↔ Ag⁺ + Cl^- K_sp=1.6 x 10^-10 Based on other answers, you should know this one.