Question 4

How can the production of dihydrogen, obtained from ‘coal gasification’, be increased?


Dihydrogenis produced by coal gasification method as:


C(s)      +      H2O(g)      →     CO(g)    +   H2(g)        


The yield of dihydrogen (obtained from coal gasification) can be increased by reacting carbon monoxide (formed during the reaction) with steam in the presence of iron chromate as a catalyst.

This reaction is called the water-gas shift reaction. Carbon dioxide is removed by scrubbing it with a solution of sodium arsenite.

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