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20 January, 16:14

Which of the following is NOT a decomposition reaction?

a NH4NO2 (s) + N2 (g) + H2O (1)

b

H2O2 (aq) + H2O (l) + O2 (g)

C KCl (s) → K (s) + Cl2 (g)

d Al (s) + HCl (aq) + AICI: (aq) + H2 (g)

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  1. 20 January, 20:11
    0
    Al + HCl → AlCl₃ + H₂

    Its single displacement reaction.

    Explanation:

    Chemical equation:

    2NH₄NO₃ → 2N₂ + 4H₂O + O₂

    It is the decomposition reaction in which ammonium nitrate decompose to give nitrogen, water and oxygen.

    Chemical equation:

    2H₂O₂ → 2H₂O + O₂

    It is the decomposition reaction in which hydrogen peroxide decompose to give water and oxygen.

    Chemical equation:

    2KCl → 2K + Cl₂

    It is the decomposition reaction in which potassium chloride decompose to give its constituent elements potassium and chlorine.

    Chemical equation:

    2Al + 6 HCl → 2AlCl₃ + 3 H₂

    This is single replacement reaction in which aluminium react with HCl and form aluminium chloride and hydrogen.
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