question_answer

Name the substance oxidised and the substance reduced, and also identify the oxidising agent and reducing agents in the following reaction:

(a) \[\mathbf{3Mn}{{\mathbf{O}}_{\mathbf{2}}}\mathbf{+4Al}\to \mathbf{3Mn+2A}{{\mathbf{l}}_{\mathbf{2}}}{{\mathbf{O}}_{\mathbf{3}}}\]

(b) \[\mathbf{F}{{\mathbf{e}}_{\mathbf{2}}}{{\mathbf{O}}_{\mathbf{3}}}\mathbf{+3CO}\to \mathbf{2Fe+3C}{{\mathbf{O}}_{\mathbf{2}}}\]

(c) \[\mathbf{S}{{\mathbf{O}}_{\mathbf{2}}}\mathbf{+2}{{\mathbf{H}}_{\mathbf{2}}}\mathbf{S}\to \mathbf{3S+2}{{\mathbf{H}}_{\mathbf{2}}}\mathbf{O}\]

Answer:

(a)

Substance oxidised \[=Al\]

Substance reduced \[=Mn{{O}_{2}}\]

Oxidising agent \[=Mn{{O}_{2}}\]

Reducing agent \[=Al\]

(b)

Substance oxidised \[=CO\]

Substance reduced \[=F{{e}_{2}}{{O}_{3}}\]

Oxidising agent \[=F{{e}_{2}}{{O}_{3}}\]

Reducing agent \[=CO\]

(c)

Substance oxidised \[={{H}_{2}}S\]

Substance reduced \[=S{{O}_{2}}\]

Oxidising agent \[=S{{O}_{2}}\]

Reducing agent \[={{H}_{2}}S\]