The specific rate constant is equal to rate of reaction when concentration of reactants are taken as unity. Which of the following factors affects specific rate constant?
Correct answer: C. Temperature
- A. Concentration of reactants
- B. Pressure
- C. Temperature
- D. Surface area
Explanation
Temperature has a significant impact on the specific rate constant. The Arrhenius equation describes how the rate constant changes with temperature. Generally, an increase in temperature leads to an increase in the rate constant and, consequently, an increase in the reaction rate. This is due to the increased kinetic energy of molecules at higher temperatures, leading to more frequent and energetic collisions.
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