Chemical EquilibriumDynamic Equilibrium46Choose the best answerFor N₂(g) + 3H₂(g) ⇌ 2NH₃(g), at equilibrium:AEqual volumes of N₂ and H₂ reactBEqual masses of N₂ and H₂ reactCBoth reactions stopDNH₃ forms and decomposes at equal rates Like 0 Discuss 0Share
Chemical EquilibriumEffect of Catalyst on Equilibrium47Choose the best answerA catalyst increases the rate of a reversible reaction because it:AProvides an alternative pathway with lower activation energyBIncreases molecular kinetic energyCShifts equilibrium permanently toward productsDSlows the backward reaction Like 0 Discuss 0Share
Chemical EquilibriumEquilibrium Constant Kc48Choose the best answerFor A + B ⇌ C + D, equal initial concentrations of A and B are used. At equilibrium, the concentration of C is twice that of A. The value of Kc is:A4B2C1/4D1/2 Like 0 Discuss 0Share
Chemical EquilibriumDynamic Equilibrium49Choose the best answerFor A ⇌ B, equilibrium is reached when:AA completely changes into BBExactly 50% of A changes into BCRate of A → B equals rate of B → ADOnly 10% of A changes into B Like 0 Discuss 0Share
Chemical EquilibriumLaw of Mass Action50Choose the best answerThe law of mass action was proposed by:AGuldberg and WaageBGrahamCFaraday and ArrheniusDHess and Dalton Like 0 Discuss 0Share