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Chemistry-

General

Easy

Question

The activation energy for the forward reaction $X rightwards arrow Y$ is $60 blank k J blank m o l to the power of negative 1 end exponent$ and $increment H$ is $negative 20 blank k J blank m o l to the power of negative 1 end exponent$ . The activation energy for the reverse reaction is

$40 k J m o l^{- 1}$
$60 k J m o l^{- 1}$
$80 k J m o l^{- 1}$
$20 k J m o l^{- 1}$

The correct answer is: $80 blank k J blank m o l to the power of negative 1 end exponent$

$E subscript a end subscript equals E subscript a left parenthesis f right parenthesis end subscript plus increment H$
$equals 60 plus 20 equals 80 blank k J blank m o l to the power of negative 1 end exponent$

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