Though kinetics of ammonia synthesis dictates the use of low temperature for high equilibrium conversion, yet it is kept moderately high (550°C), because at low temperature___________________?
Correct answer: A. Rate of reaction is very low
- A. Rate of reaction is very low
- B. Very high pressure is required resulting in costly pressure vessel
- C. Space velocity of gas is very low resulting in decreased conversion
- D. None of these
Explanation
Lowering temperature improves the equilibrium yield of ammonia, but it greatly reduces the reaction rate because N2 dissociation is kinetically difficult. A moderately high temperature is therefore used with a catalyst to obtain a practical production rate.
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