Chemical Equilibrium MCQs

Correct answer A. When the ionic product exceeds the Ksp of the salt

Correct answer D. mol⁻² dm⁶

Correct answer B. There is no change in the equilibrium position

Correct answer B. H₂(g) + I₂(g) ⇌ 2HI(g)

Correct answer C. 49

Correct answer A. 1.8 × 10⁻⁹ mol dm⁻³

Correct answer C. It decreases

Correct answer D. About 450 °C, about 200 atm and an iron catalyst

Correct answer D. At lower temperatures the rate of reaction becomes too slow to be economical

Correct answer B. Ksp = [Ag⁺]²[CrO₄²⁻]

Correct answer B. 1.7 × 10⁻¹⁰ mol² dm⁻⁶

Correct answer C. 3.2 × 10⁻¹¹ mol³ dm⁻⁹

Correct answer B. Some AgCl precipitates because its solubility is lowered

Correct answer B. Ethanoic acid and sodium ethanoate

Correct answer A. NH₄OH and NH₄Cl

Correct answer B. It combines with CH₃COO⁻ ions to form undissociated CH₃COOH

Correct answer D. 5.74

Correct answer B. The forward and reverse reactions continue at equal rates

Correct answer C. Equilibrium is reached sooner but its position and K are unchanged

Correct answer B. The equilibrium shifts to the right because fewer gas molecules are on that side