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Question

Identify the type of reaction when dilute hydrochloric acid is added to iron filings.



Your Answer
A

Decomposition Reaction

Your Answer
B

Combination Reaction

Correct Answer
C

Displacement Reaction

Your Answer
D

Double Displacement Reaction


Solution

The correct option is B

Displacement Reaction


In the given reaction, hydrochloric acid dissociates. The released chloride ions oxidize the iron molecules. The hydrogen ions are reduced to hydrogen gas. Therefore, hydrogen gas and iron chloride are produced.

Fe(s) + 2HCl(aq)  FeCl2(aq) + H2(g)

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