Which of the following is water -gas shift reaction ?

Options

A. `C(s) +H_(2) O(g)overset(1270 K) toCO(g) +H_(2)(g)`
B. `CH_(4)(g) +H_(2)O(g)overset(1270K) to CO(g)+3H_(2)(g)`
C. `CO_(s) +H_(2) O(g)underset("lorn (III)chromate")overset(673 K) toCO_(2)(g)+H_(2)(g)`
D. `2H_(2)O(l)underset("Traces of acid //base")overset("Electrolysis")to2H_(2)(g)+O_(2)(g)`

Answer

C

Explanation

The chemical reaction in which carbon monoxide of the syn gas reacts with steam to give carbon dioxide dihydrogen is called water gas shift reaction. In this reaction , syn gas is oxidised by mixing it with more steam at 673 K in the presence of iron chromate or ferric oxide and little chromium oxide (at `450^(@)` ) as catalyst.