Question

give an exampel of chemical reaction where a gas is evolved​

Answer 1

Answer:

A common type of gas evolution reaction is an acid-base reaction, where an acid mixes with a base to produce water and carbon dioxide. ... For example, carbonic acid breaks down to water and carbon dioxide, sulfurous acid breaks down to water and sulfur dioxide, and ammonium hydroxide breaks down to water and ammonia gas.

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Answer 2

Answer:

H2O +HCL = H2O +HCL(GAS STATE ) heat evolve