Chemical kinetics #Rate Constant1Choose the best answerWhich statement about the rate constant, k, is correct?AIt is independent of temperature.BIt depends only on the initial concentration of reactants.CIts value changes with temperature but not with reactant concentration.DIt is equal to the reaction rate. Like 0 Discuss 0Share
Chemical kinetics #Rate Law2Choose the best answerFor 2A + B → products, the experimental rate law is Rate = k[A][B]. Which statement is correct?AThe reaction is elementary.BThe reaction is first order with respect to A.CThe stoichiometric coefficient of A must be 1.DThe overall order of the reaction is 3. Like 0 Discuss 0Share
Chemical kinetics #Molecularity3Choose the best answerWhich statement correctly describes molecularity?AIt can be zeroBIt may be fractionalCIt is defined only for an elementary reactionDIt is obtained from the overall rate law Like 0 Discuss 0Share
Chemical KineticsEffect of Temperature on Reaction Rate4Choose 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
Chemical KineticsRate of Reaction and Stoichiometric Coefficients5Choose the best answerFor the reaction 3A + B → C + D, the rate of reaction is:A−(1/3)d[A]/dt = −d[B]/dt = d[C]/dt = d[D]/dtB−d[A]/dt = −d[B]/dt = d[C]/dtC+(1/3)d[A]/dt = d[C]/dtD−d[A]/dt = −d[B]/dt = d[C]/dt = d[D]/dt Like 0 Discuss 0Share