What is water-gas shift reaction?

Explanation

The carbon monoxide of the water gas can be converted carbon dioxide be mixing the gas mixture with more steam at `400^(@)C` and passed over a shift converter containing iron/copper catalyst. This reaction is called as water -gas shift reaction .
`CO+H_(2)OrarrCO_(2)+H_(2)`
The `CO_(2)` formed in the above process is absorbed in a solution of potassium carbonate.
`CO_(2)+K_(2)CO_(3)+H_(2)Orarr2KHCO_(3)`