Question

when we put burning candle near the mouth of test tube consisting of sulfuric acid and pieces of magnesium metal, why does it explode? ​

Answer 1

Answer:

-Hydrogen gas is evolved from the test tube in this reaction.

 When we bring the candle near the mouth of the test tube, this hydrogen gas burns explosively in the presence of air with a pop sound.because

Explanation:

the reaction of sulphuric acid and Magnesium metal is as follows:

1. Mg + H2SO4 → MgSO4 + H2

2.Hydrogen gas is evolved from the test tube in this reaction.

- 3.When we bring the candle near the mouth of the test tube, this hydrogen gas burns explosively in the presence of air with a pop sound.