KMU MDCAT 2024 Chemistry#Chemical Kinetics#Rate Constant1Choose the best answerFor a first order reaction A → B, the rate constant is 0.0458 s⁻¹. Calculate rate of the reaction if the concentration of reactant is 0.35 mol dm⁻³. (KMU MDCAT 2024)A0.012 mol dm⁻³ s⁻¹B0.014 mol dm⁻³ s⁻¹C0.016 mol dm⁻³ s⁻¹D0.018 mol dm⁻³ s⁻¹ Like 1 Discuss 0Share
Chemical KineticsEffect of Temperature on Reaction Rate2Choose the best answerThe large increase in reaction rate with increasing temperature is mainly because:ACollision frequency decreases.BThe fraction of molecules with energy equal to or greater than Ea increases.CMean free path decreases only.DActivation energy decreases. Like 0 Discuss 0Share
MDCAT Chemistry Past Paper 2023#Chemical Kinetics#Ionic Reaction Rate3Choose the best answerWhich of the following best describes the ionic reactions of inorganic compounds? (MDCAT 2023)AVery slowBModerately slowCVery fastDDo not occur Like 0 Discuss 0Share
Chemical KineticsEffect of Catalyst on Activation Energy4Choose the best answerA reaction is catalysed by X. The primary kinetic effect of X is that it:ADecreases the rate constantBIncreases the equilibrium constantCDecreases the enthalpy changeDLowers the activation energy Like 0 Discuss 0Share
Chemical KineticsUnits of Rate Constant and Reaction Order5Choose the best answerThe rate constant has units s⁻¹. What is the order of the reaction?AZeroBFirstCSecondDFractional Like 0 Discuss 0Share