Determine the oxidation no

CHEMISTRY · Multi-part · A Level · Chemistry · Oxidation, reduction and redox reactions · Oxidation, reduction and redox reactions

Problem

Determine the oxidation no. of following elements given in bold letters: (a)

\mathbf{KMnO_4}

(b)

\mathbf{H_2SO_5}

(c)

\mathbf{H_2S_2O_8}

(d)

\mathbf{NH_4NO_3}

(e)

\mathbf{K_4Fe(CN)_6}

(f)

\mathbf{OsO_4}

(g)

\mathbf{HCN}

(h)

\mathbf{HNC}

(i)

\mathbf{HNO_3}

(j)

\mathbf{KO_2}

(k)

\mathbf{Fe_3O_4}

(l)

\mathbf{KI_3}

(m)

\mathbf{OCN}

(n)

\mathbf{Fe(CO)_5}

(o)

\mathbf{Fe_0.94O}

(p)

\mathbf{NH_2 \cdot NH_2}

(q)

\mathbf{FeSO_4 \cdot (NH_4)_2SO_4 \cdot 6H_2O}

(r)

\mathbf{NOCl}

(s)

\mathbf{NOClO_4}

(t)

\mathbf{Na_2[Fe(CN)_5NO]}

(u)

\mathbf{[Fe(NO)(H_2O)_5]SO_4}

(v)

\mathbf{Na_2S_4O_6}

(w) Dimethyl sulphoxide or

\mathbf{(CH_3)_2SO}

(x)

\mathbf{Na_2S_2O_3}

(y)

\mathbf{CrO_5}

\mathbf{CrO(O_2)_2}

(z)

\mathbf{CaOCl_2}