Which of the following is a heterogeneous catalysis?

1.	Which of the following is a heterogeneous catalysis?
Answer» `2C_(2)H_(5)OH OVERSET("Conc."H_(2)SO_(4))rarrC_(2)H_(5)OC_(2)H_(5)+H_(2)O` `2CO+O_(2) overset(NO)rarrCO_(2)` `SO_(2)+(1)/(2)O_(2) overset(NO)rarrSO_(3)` `SO_(2)+(1)/(2)O_(2) overset(V_(2)O_(5))rarrSO_(3)` Solution :In Homogeneous CATALYSIS all the reactants, PRODUCTS and the CATALYSTS have the same physical state.

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