Question

write a chemical reaction of acid where hydrogen gas evolves.also write a test for the identification of hydrogen gas​

Answer 1

Explanation:

Reaction involving magnesium and hydrochloric acid. To test for hydrogen gas evolved, insert a lighted splint into the test tube. The lighted splint should extinguish with a characteristic "pop" sound. Note that if there is insufficient hydrogen gas, the flame may not be completely extinguished.