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Question
What happens when dilute hydrochloric acid is added to iron fillings? Choose the correct answer.
Options
Hydrogen gas and iron chloride are produced.
Chlorine gas and iron hydroxide are produced.
No reaction takes place.
Iron salt and water are produced.
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Solution
Hydrogen gas and iron chloride are produced.
Explanation:
The chlorine from the hydrogen chloride is displaced into the iron fillings, undergoing the following reaction:
\[\ce{Fe_{(s)} + 2HCl(dil{.}) -> FeCl2_{(aq)} + H2_{(g)}}\]
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