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:

due to the formation of hydrogen gas

h2so4 + mg --- mgso4 + h2

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Explanation:

Answer 2

From the given question, we have the following reaction:

⇒ Mg(s) + H₂SO₄(aq) ➞ MgSO₄(aq) + H₂(g)

We know, Mg is a metal and H₂SO₄ an acid, Hence they would react with each other to give metal salt and hydrogen gas would be liberated.

Now, When we put burning candle near the mouth of the test tube, we hear a pop sound. this is due to the hydrogen gas. Hydrogen gas burns with a pop sound.

Some Information :-

◉ Metals are the substances which donate electrons. While acids are the substances which disassociate hydronium ions in thier aqeous solution.

◉ The reaction of an acid and a base would give a neutral salt and water and this reaction is also called Neutralization reaction.