Question

A scientist was performing the reaction of magnesium metal with hydrochloric acid in a lab. During the reaction, he burnt a
bunsen burner near the mouth of the reaction vessel. As soon as the reaction started, the flame from the bunsen burner started
glowing brightly and soon there was an explosion. What could be the possible reason for this explosion?

a . magnesium in the reaction vessel was explosive
b. Bunsen burner was not working properly
c. the evolved hydrogen gas is explosive
d. none of the above​

Answer 1

Answer:

the answer is C

Explanation:

Magnesium is a flammable solid. flammable solid means a solid  which may cause fire through friction. Hydrochloric acid is a corrosive liquid.So the reaction between the magnesium metal and hydrochloric acid will be exothermic reaction .Hence, hydrogen gas which is evolved will be explosive. the scientist accidently burnt the reaction vessel from where the hydrogen gas was evolved . since hydrogen was burnt in air with the help of bunsen burner the reaction between the oxygen (present in air) and hydrogen gas will be highly explosive reaction.

And so we are said to handle hydrogen carefully.

I hope i could explain you in simple words .... if you understood it pls reply .....