Saloni took a piece of burning charcoal and collected the gas evolved in test tube Write down word equations of all the reactions taking place in this process.

Explanation

Carbon + Oxygen `to` Carbon dioxide (gas)
`C + O_2 to CO_2`
Carbon dioxide + water `to` Carbonic acid
`CO_2 + H_2 O to H_2 CO_3` (Turns blue litmus red)
Thus the gas evolved is acidic in nature .