Chemical kinetics #Catalytic Properties#Transition Elements6Choose the best answerWhy does a catalyst increase the rate of a chemical reaction?AIncreases the kinetic energy of reactant molecules.BDecreases the activation energy by providing an alternative pathway.CIncreases the enthalpy change (ΔH) of the reaction.DIncreases the equilibrium constant. Like 0 Discuss 0Share
Chemical equilibrium 01Chemical equilibrium #Catalytic Properties#Transition Elements7Choose the best answerA catalyst is added after equilibrium is established for 2SO₂(g) + O₂(g) ⇌ 2SO₃(g). Which statement is correct?AKc increases because the forward reaction becomes fasterBKc decreases because the reverse reaction becomes fasterCBoth forward and reverse rates increase, but Kc remains unchangedDEquilibrium shifts toward SO₃, increasing Kc Like 0 Discuss 0Share
XiMDCAT XI Complete Chemistry Grand Test#Catalytic Properties#Transition Elements8Choose the best answerThe energy diagram shows the same reaction with and without a catalyst. Which statement is correct?AThe forward reaction, with catalyst, is endothermicBThe enthalpy change of reaction is (E₂ − E₃)CE₄ is the activation energy for the reverse uncatalysed reactionDThe enthalpy change of reaction is reduced by using a catalyst Like 0 Discuss 0Share