The unit of rate constant of second order reaction is
Correct answer: D. mole-1 dm3 sec-1
- A. mol dm-3 sec-1
- B. mol-2 dm6
- C. sec-1
- D. mole-1 dm3 sec-1
Explanation
Unit of rate = mol dm-3 sec-1 Unit of a second order reaction is = mol2 dm-6 as the rate eqn:- rate = k[reactants]2 ∴ unit of k = unit of rate / unit of the second order reaction k = mol dm-3 sec-1 / mol2 dm-6 k = mol1-2 dm-3-(-6) sec-1 k = mol-1 dm3 sec-1
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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.
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