SSC
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Magnesium reacts with hydrochloric acid to produce magnesium chloride and hydrogen gas. The reactants in this reactions are
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magnesium and magnesium chloride.
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hydrochloric acid and hydrogen gas.
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magnesium and hydrochloric acid.
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magnesium chloride and hydrogen gas.
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Explanation:
Detailed explanation-1: -Magnesium, being more reactive than hydrogen, displaces it in a chloride molecule, resulting in a single displacement reaction . Magnesium is oxidized when two electrons are lost, and hydrogen is reduced when two electrons are gained. The reaction is as follows Mg s + 2 HCl ( aq ) → MgCl 2 ( aq ) + H 2 ( g ) .
Detailed explanation-2: -Pour hydrochloric acid into the Petri dish to a depth of about 5 mm. Using forceps, place the magnesium ribbon into the Petri dish. The magnesium reacts with the acid, producing visible bubbles of hydrogen gas.
Detailed explanation-3: -It is displacement reaction as magnesium is displacing hydrogen to form magnesium chloride and hydrogen gas.
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