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InterviewSolution
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Write the conditions to maximise the yield of H_2SO_4 by Contact process. |
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Answer» Solution :The main step in the preparation of `H_2SO_4` is the oxidation of `SO_2` to `SO_3` . `SO_2(g) + O_2(g) iff 2SO_3(g), Delta_f H^(@) = -196.6 kJ " mol"^(-1)`. The reaction is exothermic and reversible. The forward reaction proceeds with decreases in volume . Therefore, in accordance wiht Le Chatelier.s PRINCIPLE , to maximise the yield of `SO_3`, a low temperature `(720 K)` , a high pressure (2 bar ) are required. `V_2O_5` is used as a CATALYST . |
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