Q25 / 125 · BITSAT 2010 · Chemistry

The activation energy for a simple chemical reaction $\mathrm{A} \rightarrow \mathrm{B}$ is $E_{a}$ in forward direction. The activation energy for reverse reaction

  • A
    is always less than $E_{a}$
  • Correct answer
    B
    can be less than or more than $E_{a}$
  • C
    is always double of $E_{a}$
  • D
    is negative of $E_{a}$

Solution

Since the nature of reaction (i.e. exothermic or endothermic) is not given, $\mathrm{E}_{\mathrm{a}}$ for reverse reaction can be more or less.

Hence, the correct answer is option: 'B'.

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