Chemical KineticsMolecularity of Elementary Reactions11Choose the best answerAn elementary reaction involving two different reactant species:ACan never be second orderBCannot be unimolecularCCannot be bimolecularDCannot have a rate law Like 0 Discuss 0Share
Chemical KineticsArrhenius Equation12Choose the best answerFor the Arrhenius equation k = Ae⁻ᴱᵃ⁄ᴿᵀ, which statement is correct?Ak is the equilibrium constant.BA is the adsorption factor.CEa is the activation energy.DR is the Rydberg constant. Like 0 Discuss 0Share
Chemical KineticsCollision Theory13Choose the best answerWhich statement is NOT true according to collision theory?AReacting particles must collide for a reaction to occur.BAll collisions form products.COnly effective collisions form products.DEffective collisions require sufficient energy and suitable orientation. Like 0 Discuss 0Share
Chemical KineticsConcentration-Time Curve and Reaction Rate14Choose the best answerDuring a reaction, the concentration–time curve initially changes rapidly but becomes nearly horizontal after a long time. In this nearly horizontal region, the concentration changes very little with time. What does this indicate?AReaction rate is maximumBReaction rate is rapidly increasingCReaction rate is approximately zeroDConcentration is changing rapidly Like 0 Discuss 0Share
Chemical KineticsEffect of Concentration on Reaction Rate15Choose the best answerWood burns faster in pure O₂ than in air because the concentration of oxygen in pure O₂ is approximately:A3 times greaterB4 times greaterC5 times greaterD7 times greater Like 0 Discuss 0Share