What happens when dilute hydrochloric acid is added to iron fillings? Tick the correct answer.
- Hydrogen gas and iron chloride are produced
- Chlorine gas and iron hydroxide are produced
- No reaction takes place
- Iron salt and water are produced
The Correct Option is A
Solution and Explanation
Hydrogen gas and iron chloride are produced. The reaction is as follows:
Fe(s) + 2HCl(aq) → FeCl2(aq) + H2 ↑
The interaction between a metal and an acid results in the formation of the corresponding salt and the release of hydrogen gas. The gas produced, when ignited, produces a distinctive popping sound, confirming its identity as hydrogen gas.
The chemical reaction between iron filings and dilute hydrochloric acid yields ferrous chloride and hydrogen gas as products.
Fe(s) + 2HCl(aq) → FeCl2(aq) + H2 ↑
Hence the correct answer is option (A).
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Concepts Used:
Oxidation and Reduction
What is Oxidation?
Oxidation is a chemical process which can be explained by following four point of views
In terms of oxygen transfer
In terms of electron transfer
In terms of hydrogen transfer
In terms of oxidation number
Oxidation in Terms of Oxygen Transfer – Oxidation is gain of oxygen.
What is Reduction?
Reduction is a chemical process which can be explained by following four point of views
In terms of oxygen transfer
In terms of electron transfer
In terms of hydrogen transfer
In terms of oxidation number
Reduction in Terms of Oxygen Transfer – Reduction is loss of oxygen.
What is Redox Reaction?
A chemical reaction which involves transfer of electrons or change in oxidation number of atoms is called redox reaction.