Question

If the concentration is expressed in moles per litre, the unit of the rate constant for a first order reaction is.

• A. Mole litre $- 1\sec^{- 1}{}$
• B. Mole litre$- 1$
• C. $\sec^{- 1}{}$
• D. Mole$- 1$ litre$- 1$ sec$- 1$

Answer 1

Answer: (C)

$\sec^{- 1}{}$

Answer 2

Unit of K for first order reaction $= sec^{- 1}$.