Question

Give two chemical equations in which evolution of gas takes place​

Answer 1

Answer:

One of the most common gas evolution reactions is an acid-base reaction, where an acid is combined with a base to produce water and carbon dioxide. This is also commonly called a neutralization reaction, since the acid and base neutralize each other to make water.

Answer 2

Answer:

Some chemical reactions take place with the evolution of gas. For example, when zinc reacts with hydrochloric acid, hydrogen gas is evolved with formation of zinc chloride. Change in Color – Some chemical reactions are accompanied by a change in color.