Question

Is a forward or reverse reaction favored?

Answer 1

Answer:

(a) $CH_3COOH \rightleftharpoons CH_3COO^-+ H^+$: reverse reaction is favored.

(b) $AgCl \rightleftharpoons Ag^+ + Cl^-$: reverse reaction is favored.

(c) $Al(OH)_3 \rightleftharpoons Al^{3+} + 3OH^-$: reverse reaction is favored.

(d) $A+B\rightleftharpoons C$: forward reaction is favored.

Explanation:

Hello,

(a) $CH_3COOH \rightleftharpoons CH_3COO^-+ H^+$:

In this case, since the Ka is lower than 1, we infer the reverse reaction is favored since the reactant (acetic acid) will tend to have a higher concentration.

(b) $AgCl \rightleftharpoons Ag^+ + Cl^-$:

In this case, since the Ka is lower than 1, we infer the reverse reaction is favored since the reactant (silver chloride) will tend to have a higher concentration.

(c) $Al(OH)_3 \rightleftharpoons Al^{3+} + 3OH^-$

In this case, since the Ka is lower than 1, we infer the reverse reaction is favored since the reactant (aluminium hydroxide) will tend to have a higher concentration.

(d) $A+B\rightleftharpoons C$

In this case, since the Ka is greater than 1, we infer the forward reaction is favored since the product (C) will tend to have a higher concentration.

Regards.