The following reaction occurs in the Blast furnance where iron ore is reduced to iron metal $\mathrm{Fe}_{2} \mathrm{O}_{3(\mathrm{~s})}+3 \mathrm{CO}_{(\mathrm{g})} \rightleftharpoons \mathrm{Fe}_{(\mathrm{l})}+3 \mathrm{CO}_{2(\mathrm{~g})}$ Using the Le-chatelier's principle, predict which one of the following will not disturb the equilibrium.

(A) Addition of $\mathrm{Fe}_{2} \mathrm{O}_{3}$

(B) Addition of $\mathrm{CO}_{2}$

(D) Removal of $\mathrm{CO}_{2}$

JEE Main · 2024 · 05 Apr 2024 · Shift 1 · Equilibrium

The following reaction occurs in the Blast furnance where iron ore is reduced to iron metal

Fe_{2} O_{3 (s)} + 3 CO_{(g)} ⇌ Fe_{(l)} + 3 CO_{2 (g)}

Using the Le-chatelier's principle, predict which one of the following will not disturb the equilibrium.

Answer: (A)

F e_{2} O_{3} (s) + 3CO (g) ⇌ 2Fe (l) + 3C O_{2} (g)

. In the equilibrium expression only gaseous species appear; the activity of a pure solid (or pure liquid) is unity. Adding solid

F e_{2} O_{3}

does not change its activity, so it does not shift the equilibrium. Changing

CO

C O_{2}

(both gases) would disturb it. Hence addition of

F e_{2} O_{3}

has no effect.

JEE Main · 2024 · 05 Apr 2024 · Shift 1 · Single correct option