JEE Main 2002 Chemistry question

Not in JEE Main or NEET syllabus

The formation of gas at the surface of tungsten due to adsorption is the reaction of order

(1)0Correct
(2)1
(3)2
(4)insufficient data

Answer: (1)

Solution

For gas-phase decomposition on a metal surface such as tungsten at high pressure, the surface is fully covered (saturated) with adsorbed molecules, so the rate is independent of the gas concentration

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Question ID VK-037961