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For the manufacture of Ammonia by Haber'...

For the manufacture of Ammonia by Haber's process, write the equation and optimum conditions for maximum yield of ammonia. 

Text Solution

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Chemical equaiton: `N_(2)(g) +3H_(2)(g) underset(Al_(2)O_(3)) overset(Fe_(2)O_(3)) to 2NH_(3)(g) DeltaH_(f)^(.) = -46.1KJ" mol"^(-1)`.
Optimum conditions for maximum yield:
(i) High pressure of 200 atmospheres (or `200 xx 10^(5)` Pa)
(ii) Optimum temperature of 700 K.
(iii) Iron oxide as a catalyst, mixed with small amount of `K_(2)O or Al_(2)O_(3)`
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