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CBSE Class 12-science Answered

How to increase the yield of sulphuric acid in Contact process? Draw the flow chart  for the manufacture of sulphuric acid.
Asked by Topperlearning User | 11 Jun, 2014, 02:12: PM
answered-by-expert Expert Answer

The key step in the manufacture of H2SO4 is the catalytic oxidation of SO2 with O2 to give SO3 in the presence of V2O5 (catalyst).

2SO2(g)   + O2(g)     2SO3(g)

 The reaction is exothermic, reversible and the forward reaction leads to a decrease in volume. Therefore, low temperature and high pressure are the favourable conditions for maximum yield.

 

 

 

 

 

  Answered by | 11 Jun, 2014, 04:12: PM

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