Chemical kinetics #Rate Constant26Choose 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 KineticsEffect of Concentration on First-Order Reaction27Choose the best answerA gaseous reaction is experimentally first order overall. If the vessel volume is reduced to one-third at constant temperature, the reactant concentration becomes three times larger. The reaction rate therefore becomes:AOne-third as largeBTwo-thirds as largeCThree times as largeDSix times as large Like 0 Discuss 0Share
Chemical KineticsEffect of Concentration on Reaction Rate28Choose the best answerThe _____ the concentration of reactants, the _____ the probability of collisions and hence the _____ the reaction rate.ALower, greater, greaterBHigher, greater, higherCHigher, lower, higherDLower, lower, higher Like 0 Discuss 0Share
Chemical KineticsFirst-Order Reactions29Choose the best answerWhich of the following is commonly cited as an example of a first-order reaction?AH₂ + Cl₂ → 2HClBNH₄NO₂ → N₂ + 2H₂OC2HI → H₂ + I₂D2NO + Cl₂ → 2NOCl Like 0 Discuss 0Share
BUMHS MDCAT 2025 Chemistry#Chemical Kinetics#Rate Constant30Choose the best answerUnit of rate constant for a particular reaction depends upon the: (BUMHS MDCAT 2025)Atemperature of reactionBactivation energy of reactionCmolecularity of reactionDorder of reaction Like 0 Discuss 0Share