What happens when dil. hydrochloric acid is added to iron filings?
A
Hydrogen gas and iron chloride are produced
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B
Chlorine gas and iron hydroxide are produced
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C
No reaction takes place
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D
Iron salt and water are produced
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Solution
The correct option is A Hydrogen gas and iron chloride are produced When dilute Hydrochloric acid is added to iron filings, iron chloride & hydrogen gas is produced.
Fe+2HCl⟶FeCl2+H2
The iron displaces hydrogen from hydrochloric acid to form iron (II) chloride & hydrogen gas. This is a single displacement reaction.
Thus the answer is option (A) Hydrogen gas and iron chloride are produced.