6What is the ΔHof the reactionA + B→C1.-40 kJ2.+100 kJ3.-75 kJcorrect4.-275 kJ5.+175 kJExplanation:ΔHfor the forward reaction = energy ofthe products-energy of the reactants.018(part2of2)10.0pointsWhat is the activation energy for the forwardreaction?Explanation:02010.0pointsConsider the following potential energy dia-gram.abdcefA+BX+YReaction progressPotential energyIf a catalyst were added, the height of whicharrow would change? How would it change? 1.450 kJ2.350 kJ3.100 kJcorrect4.175 kJ5.200 kJExplanation:The energy of activation for the forwardreaction is the difference between the energyof the peak and the energy of the reactants.1.a; the potential energy of the reactantswould be higher.2.f; the potential energy of the productswould be lower.3.b; the activation energy would be lower.correct4.c; the activation energy would be higher.5.a; the activation energy would be lower. 019 10.0points A catalyst works by 1. increasing the average kinetic energy of the reactant molecules. 2. making the reaction more exothermic and therefore more favorable. 3. providing an alternate reaction pathway with a lower activation energy. correct 4. providing an alternate reaction pathway with a higher activation energy. Explanation:
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