The incorrect statement about chemisorption is

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chemisorption is shown by only those gases which react with the adsorbent.

enthalpy of chemisorption is high, i.e. 80-240 kJ mol-1

it is favoured by low temperature

None of the above

answer is C.

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Detailed Solution

Chemisorption is an exothermic process and it is very slow process at low temperature on the account of high energy of activation. Therefore, with increase of temperature chemisorption increases usually high pressure is also favourable for chemisorption.

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