Chemical EquilibriumEffect of Catalyst on Equilibrium71Choose the best answerWhich statement correctly describes the effect of a catalyst on an equilibrium mixture?AIt changes the equilibrium constantBIt shifts equilibrium permanently toward productsCIt does not change the equilibrium compositionDIt stops the reverse reaction Like 0 Discuss 0Share
Chemical EquilibriumEffect of Pressure on Equilibrium72Choose the best answerWhich equilibrium is unaffected by pressure change because the total number of gaseous moles is equal on both sides?AN₂(g) + O₂(g) ⇌ 2NO(g)BPCl₅(g) ⇌ PCl₃(g) + Cl₂(g)CN₂(g) + 3H₂(g) ⇌ 2NH₃(g)DSO₂Cl₂(g) ⇌ SO₂(g) + Cl₂(g) Like 0 Discuss 0Share
Chemical EquilibriumEffect of Temperature on Equilibrium73Choose the best answerFor A + B + heat ⇌ C + D, increasing temperature causes the concentration of products to:AIncreaseBDecreaseCRemain unchangedDBecome zero Like 0 Discuss 0Share
Chemical EquilibriumReversible Reactions74Choose the best answerWhich is a characteristic of a reversible reaction in a closed system?AReactants and products must have equal molesBIt always proceeds completely to productsCIt generally does not proceed completely in either directionDThe backward reaction cannot occur Like 0 Discuss 0Share
Chemical EquilibriumFactors Affecting Equilibrium Constant75Choose the best answerFor CH₃COOH + H₂O ⇌ CH₃COO⁻ + H₃O⁺, the equilibrium constant changes when:ACH₃COO⁻ is addedBCH₃COOH is addedCA catalyst is addedDTemperature is changed Like 0 Discuss 0Share