Question

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

Answer 1

Explanation:

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

Mg + H2SO4 → MgSO4 + H2

-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.