Unit of k in first order reaction is:
Correct answer: A. s-1
- A. s-1
- B. moles dm-3 s-1
- C. moles dm-3
- D. mol-1 dm3
Explanation
Unit of K = (Unit of Rate) / (Unit of [A]) Unit of K = (mol/L/s) / (mol/L) Unit of K = 1/s Therefore, the unit of the rate constant (K) for this first-order reaction is "1 per second" or "s^-1", hence option A is correct.
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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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