Question

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

Answer 1

Answer:

-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.

Explanation:

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Answer 2

Answer:

Pop up sound

Explanation:

The pop sound is beacuse of the hydrogen gas comming out of the test tube. When a candel is burn it's makes pop up sound .

Hope this will help you