Which of the following is correct for chemical adsorption?

Increases with an increase in temperature

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Decreases with an increase in temperature

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First increases, then decreases with an increase in temperature

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First decreases, then increases with an increase in temperature

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Solution

The correct option is C First increases, then decreases with an increase in temperature
With an increase in temperature, chemical adsorption increases intially because this provides the necessary activation energy to form bonds. After a certain point, chemical adsorption starts decreasing, an increase in temperature causes desorption. Hence, the correct option is (c).

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