AlCl3 + Na NaCl + Al Did Cl change oxidation number?

Question

AlCl3 + Na NaCl + Al Did Cl change oxidation number?

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2022-04-13T00:40:09+00:00 2 Answers 0

Answers ( 2 )

  1. Serenity
    0
    2022-04-13T00:41:09+00:00

    Answer : There is no change takes place in the oxidation number of Cl.

    Explanation :

    The given chemical reaction is,

    [tex]AlCl_3+Narightarrow NaCl+Al[/tex]

    This reaction is an unbalanced reaction because the chlorine atoms are not balanced.

    In order to balance the chemical reaction, the coefficient 3 is put before the Na and NaCl.

    The balanced chemical reaction will be,

    [tex]AlCl_3+3Narightarrow 3NaCl+Al[/tex]

    Now we have to calculate the oxidation number of all the elements.

    In [tex]AlCl_3[/tex], the oxidation number of Al and Cl are, (+3) and (-1) respectively.

    The oxidation number Na and Al are, zero (0)

    In [tex]NaCl[/tex], the oxidation number of Na and Cl are, (+1) and (-1) respectively.

    From this we conclude that the oxidation number of Cl changes from (-1) to (-1) that means remains same.

    Therefore, there is no change takes place in the oxidation number of Cl.

  2. Josie97
    0
    2022-04-13T00:41:51+00:00

    Yes. If this is the balanced equation:

    AlCl3 + 3Na — 3NaCl + Al

    then Al was reduced from a 3+ oxidation (to neutralize the 3- from the chlorine) to a 0 oxidation (elemental ground state).

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