Essential Chemistry for IGCSE - Chemical Reactions (Section 4 - No. 43)
When hydrogen reacts with iodine to form hydrogen iodide, what is the state of equilibrium at 400°C?
H₂(g) + I₂(g) ⇌ 2HI(g) with a greater proportion of the products
H₂(g) + I₂(g) ⇌ 2HI(g) with a greater proportion of the reactants
H₂(g) + I₂(g) → 2HI(g) with no equilibrium
2HI(g) ⇌ H₂(g) + I₂(g) with a greater proportion of reactants
Explanation
The reaction proceeds to form the products in a relatively high proportion when heated to 400°C.
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