Which one of the following is an example of a disproportionation reaction?

  • A
    $3Cl_{2\text{(g)}} + 6OH^-{_{\text{(aq)}}} \rightarrow ClO_3^-{_{\text{(aq)}}} + 5Cl^-{_{\text{(aq)}}} + 3H_2O_{\text{(l)}}$
  • B
    $Ag^{2+}_{(aq)} + Ag_{(s)} \longrightarrow 2 Ag^{+}_{(aq)}$
  • C
    $Zn_{(s)} + CuSO_{4(aq)} \longrightarrow Cu_{(s)} + ZnSO_{4(aq)}$
  • D
    $2 KClO_{3(s)} \longrightarrow 2 KCl_{(s)} + 3 O_{2(g)}$

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