Chemical KineticsEffect of Concentration on Reaction Rate21Choose 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 Reactions22Choose 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 Constant23Choose 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
Chemical KineticsArrhenius Plot and Activation Energy24Choose the best answerFor a plot of log k against 1/T, the magnitude of slope × 2.303R equals:AThreshold energyBFrequency factorCInternal energyDActivation energy Like 0 Discuss 0Share
MDCAT Chemistry Paper 2025#Chemical Kinetics#Rate Constant25Choose the best answerK is called specific rate constant because it is: (IBA MDCAT 2025)ARate per unit concentrationBTemperature independentCDepends on concentrationDUnitless Like 0 Discuss 0Share