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In the manufacture of ammonia by Haber's...

In the manufacture of ammonia by Haber's process,
`N_(2)(g) +3H_(2)(g) hArr 2NH_(3)(g)+92.3kJ`, which of the following conditions is unfavourable ?

A

increasing the temperature

B

increasing the pressure

C

reducing the temperture

D

removing ammonia as it is formed.

Text Solution

Verified by Experts

The correct Answer is:
A
The reversible reaction
`N_(2)(g)+3H_(2)(g) hArr 2NH_(3)(g)+92.3kJ`
in the forward direction is exothermic and proceeds with a decrease in the number of moles of gaseous constituents. As such increasing the temperature will decrease the yield of `NH_(3)`.
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