Identify the substance acting as oxidant or reductant reduced if any in the following :

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

Problem

Identify the substance acting as oxidant or reductant reduced if any in the following : (i)

\mathbf{AlCl_3 + 3K \longrightarrow Al + 3KCl}

(ii)

\mathbf{SO_2 + 2H_2S \longrightarrow 3S + H_2O}

(iii)

\mathbf{BaCl_2 + Na_2SO_4 \longrightarrow BaSO_4 + 2NaCl}

(iv)

\mathbf{3I_2 + 6NaOH \longrightarrow NaIO_3 + 5NaI + 3H_2O}