Question

why is hydrogen gas evolved when a strip of iron is dipped in hydrochloric acid? Give a balanced equation.

Give a proper answer then I will surely mark your answer as brainliest otherwise I will report your answer.

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Answer 1

Answer:

Because of property of metals .

According to the property :- metal react with acids to produce hydrogen gas

Metal + Acid - Metal salt + hydrogen

iro( Fe) + hydrochloric acid (2HCl) - Ferrous chloride(FeCl2)+ Hydrogen (H2)

Answer 2

Concept Introduction:-

It could take the shape of a word or a numerical representation of a quantity's arithmetic value.

Explanation:-

A question has been provided to us

We need to find the solution to the question

Let us consider the reaction between acid and metal

Addition of acid with metal gives salt and hydrogen gas.

In this case, acid is dilute hydrochloric acid and metal is iron.

When dilute Hydrochloric acid is added to iron filings, iron(II) chloride & hydrogen gas is produced. In this reaction iron displaces hydrogen from hydrochloric acid to form iron chloride & hydrogen gas this reaction is a single displacement reaction.

The chemical reaction is given below:

$Fe(s)+2HCl(dil)\rightarrow FeCl_{2}(aq)+H_{2}(g)$

Final Answer:-

The correct answer is iron displaces hydrogen from hydrochloric acid to form iron chloride & hydrogen gas this reaction is a single displacement reaction.

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