Chemical KineticsDetermination of Overall Reaction Order36Choose the best answerFor the reaction X + 2Y → Products: Exp. 1: [X] = 0.05 M, [Y] = 0.10 M, Rate = 2.0 × 10⁻³ M s⁻¹ Exp. 2: [X] = 0.10 M, [Y] = 0.10 M, Rate = 8.0 × 10⁻³ M s⁻¹ Exp. 3: [X] = 0.10 M, [Y] = 0.20 M, Rate = 1.6 × 10⁻² M s⁻¹ What is the overall order of the reaction?A1B2C3D4 Like 0 Discuss 0Share1
Chemical KineticsZero-Order Reactions37Choose the best answerA reaction for which Rate = k is:AFirst orderBSecond orderCThird orderDZero order Like 0 Discuss 0Share
Chemical KineticsSurface Area and Reaction Rate38Choose the best answerIf the surface area of a solid reactant is increased, the order of reaction:ANecessarily increasesBNecessarily decreasesCRemains a property of the rate law and does not automatically changeDAlways becomes zero Like 0 Discuss 0Share
Chemical KineticsCatalysis39Choose the best answerWhich statement is NOT necessarily true about a catalyst?AIt cannot make a thermodynamically non-spontaneous reaction spontaneous.BIt is regenerated overall after the reaction.CIt does not change the enthalpy change of reaction.DIt must remain in exactly the same physical state throughout the reaction. Like 0 Discuss 0Share
Sindh MDCAT 2022 Chemistry#Chemical Kinetics#Surface Area and Reaction Rate40Choose the best answerQ.88 Pulverized CaCO₃ reacts faster because of the increase in:APressureBSurface areaCVolumeDSurface tension Like 0 Discuss 0Share