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    the metal which does not liberate hydrogen gas after reacting with acid is

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    [Solved] A metal M does not liberate hydrogen from acids but reacts w

    The correct answer is Cu. Copper (Cu) does not liberate H2 when it reacts with acid. Cu is least reactive than Hydrogen. So it cannot displace hydrogen from

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    A metal M does not liberate hydrogen from acids but reacts with oxygen to give a black colour product. Identify M.

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    Na Mg Cu Ca

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    The correct answer is Cu.

    Copper (Cu) does not liberate H2 when it reacts with acid.

    Cu is least reactive than Hydrogen. So it cannot displace hydrogen from acid.

    When Cu reacts with oxygen, it gives a black colour product, that is a Copper oxide.

    2Cu + O2 ⇒ 2CuO

    Important PointsSodium (Na) metal dissolves readily in dilute sulphuric acid to form solutions containing the aquated Na+ ion with hydrogen gas.

    2Na(s) + H2SO4(aq) → 2Na+(aq) + SO42-(aq) + H2(g)

    Magnesium (Mg) metal dissolves readily in dilute sulphuric acid to form solutions containing the aquated Mg2+ ion with hydrogen gas.

    Mg(s) + H2SO4(aq) → Mg2+(aq) + SO42-(aq) + H2(g)

    Calcium (Ca) metal dissolves readily in dilute or concentrated hydrochloric acid to form solutions containing the aquated Ca2+ ion with hydrogen gas.

    Ca(s) + 2HCl(aq) → Ca2+(aq) + 2Cl-(aq) + H2(g)

    Key Points

    Sodium metal reacts rapidly with water to form a colorless solution of sodium hydroxide (NaOH) and hydrogen gas (H2).

    2Na(s) + 2H2O → 2NaOH(aq) + H2(g)

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    Which of the following metals does not liberate hydrogen from acids?

    Click here👆to get an answer to your question ✍️ Which of the following metals does not liberate hydrogen from acids?

    Question

    Which of the following metals does not liberate hydrogen from acids?

    A

    Fe

    B

    Cu

    C

    Mg

    D

    Zn

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    Updated on : 2022-09-05

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    Correct option is B)

    Copper, silver, gold and platinum being less reactive than hydrogen cannot displace hydrogen from acids.

    Metals that are more reactive than hydrogen can displace hydrogen from acids. These metals include sodium, potassium, lead and zinc.

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    Which of the following metals does not liberate hydrogen from acids?

    Copper being less reactive than hydrogen cannot displace hydrogen from acids.

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    Which of the following metals ...

    Which of the following metals does not liberate hydrogen from acids?

    Updated On: 27-06-2022

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    Text Solution Open Answer in App A Fe B Cu C Mg D Zn Answer

    The correct Answer is B

    Solution

    Copper being less reactive than hydrogen cannot displace hydrogen from acids.

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