The minimum amount of energy required for an effective collision is called activation energy. Which one of the following statements is incorrect about activation energy?Ea =Activation energy K = Specific rate constant
Correct answer: C. Ea is directly proportional to k
- A. Ea of exothermic reaction in the forward reaction is less than that of backward reaction
- B. Ea of endothermic reaction in the forward direction is greater than that of reverse reaction
- C. Ea is directly proportional to k
- D. Ea is independent of temperature
Explanation
The activation energy and the rate constant have an inverse relation. So, the C option is our correct answer since the relation written is incorrect.
Last updated
About Reaction Kinetics
Reaction kinetics relates reaction rate to concentration, temperature, surface area and catalysts. Questions cover rate laws, reaction order, rate constants, activation energy and the activated complex, including how a catalyst lowers the activation energy without changing the overall energy change or equilibrium position.
Practise Reaction Kinetics
573 free Reaction Kinetics MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemistry questions like this
Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
100 g of a substance decays slower than 50 g of the same substance. The order of decay follows kinetics:
12.Rate of disappearance of reactant is equal to
13.Rate of reaction, when concentration of reactants are taken as unity is called
14.Order of reaction of N2O5→2N2O5+ O2
16.Which order of reaction obeys the relation t1/2= 1/Ka