Chemical equilibrium 01Chemical equilibrium #Chemical Kinetics#Reverse Reaction Rate26Choose the best answerFor the reversible reaction A ⇌ B, what is the rate expression for the reverse reaction?ARr = kf[A]BRr = kr[B]CRr = kf[B]DRr = kr[A] Like 0 Discuss 0Share
Chemical equilibrium 01Chemical equilibrium #Equilibrium Constant27Choose the best answerA reversible reaction is at dynamic equilibrium when:AReactants and products have equal concentrationsBForward and reverse reaction rates become equalCBoth reactions stop completelyDReactants are completely converted into products Like 0 Discuss 0Share
Chemical equilibrium 01Chemical equilibrium #Kc28Choose the best answerWhat does the value of Kc mainly tell us about an equilibrium reaction?ARate and activation energy of the reactionBDirection and extent of the reaction at equilibriumCTime required to reach equilibriumDEffect of a catalyst on equilibrium position Like 0 Discuss 0Share
Chemical equilibrium 01Chemical equilibrium #Kc29Choose the best answerWhich statement correctly relates Kc to the equilibrium composition?ALarge Kc → mostly reactantsBSmall Kc → mostly productsCModerate Kc → appreciable amounts of both reactants and productsDKc = 1 → reaction is necessarily complete Like 0 Discuss 0Share
Chemical equilibrium 01Chemical equilibrium #Equilibrium Constant30Choose the best answerAt the start of a reversible reaction, why is the forward reaction usually faster?AProduct concentration is maximumBReactant concentration is relatively highCReverse reaction has stopped permanentlyDProducts cannot undergo reaction Like 0 Discuss 0Share