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When hydrogen molecules decompose into i...

When hydrogen molecules decompose into its atoms, which conditions give the maximum yield of hydrogen atoms ?

A

High temperature and low pressure

B

low temperature and high pressure

C

high temperature and high pressure

D

low temperature and low pressure.

Text Solution

Verified by Experts

The correct Answer is:
A
`H_(2)(g) + "Heat" hArr 2H(g)`
The reaction is endothermic accompanied by increased in the number of moled. Hence by Le-Chatelier's principle, high temperature and low pressure will favour forward reaction.
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