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Why should a magnesium ribbon be chleane...

Why should a magnesium ribbon be chleaned before burning in air ?

Text Solution

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The magnesium forms an inert layer of oxide on its surface when exposed to air . This inert layer prevents it from reacting . Therefore, this layer should be removed before burning .
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Knowledge Check

  • A piece of magnesium ribbon was heated to redness in an-atmosphere of nitrogen and on cooling water was added, the gas evolved is

    A
    Hydrogen
    B
    Oxygen
    C
    Nitrogen
    D
    Ammonia

  • Magnesium powder burns in air to give

    A
    `Mg(NO_3)_2 and Mg_2N_2`
    B
    MgO only
    C
    `MgO and Mg_3N_2`
    D
    `MgO and Mg(NO_3)_2`

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    What happens when magnesium ribbon burns in air?

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    What happens when magnesium ribbon burns in air?

    What happens when magnesium ribbon burns in air?

    Ahmad took a magnesium ribbon and burned it on a flame. The white powder formed was taken in a test tube and water was added to it. He then tested the solution formed with red and blue litmus paper. What change was seen ? Why ?

    When a magnesium ribbon burns in air with a dazzling white flame and forms a white ash, is magnesium oxidzed or reduced ? Justify your answer with the help of a chemical equation.

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