Unit of rate of reaction for a second order mol-1 reaction is
Correct answer: C. mol-1dm3s-1
- A. s-1
- B. mol dm-3s-1
- C. mol-1dm3s-1
- D. mol-2dm+6s-1
Explanation
For a second-order reaction, the rate law is: Rate = k [A]^2Units of Rate = mol L^-1 s^-1Units of [A] = mol L^-1Rearranging the rate law:k = Rate / [A]^2Units of k = (mol L^-1 s^-1) / (mol L^-1)^2Simplifying:Units of k = L mol^-1 s^-1
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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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