Question

Burning of coal and formation of water are ________________ reaction.

Answer 1

Answer:

chemical and an irreversible reaction

EXPLANATION:

In this reaction solid coal burns with O2 and gets converted into carbon dioxide and water. As the one of the product is gas(I.e) Co2 as soon it is formed it escapes from the container and it is extremely hard to compress or decompose the gas into solid. Thus the backward reaction is impossible. It's a irreversible reaction