Identify the substance oxidised or reduced, or the oxidising agent

1. A.
   Na
2. B.
   $\mathrm{H_2O}$
3. C.
   NaOH
4. D.
   $\mathrm{H_2}$

Tap an option to check your answer.

1. A.
   $\mathrm{H_2S}$ is oxidising agent and $\mathrm{SO_2}$ is reducing agent.
2. B.
   $\mathrm{H_2S}$ is reduced to sulphur.
3. C.
   $\mathrm{SO_2}$ is oxidising agent and $\mathrm{H_2S}$ is reducing agent.
4. D.
   $\mathrm{SO_2}$ is oxidised to sulphur.

Tap an option to check your answer.

1. A.
   $\mathrm{C + O_2 \rightarrow CO_2}$
2. B.
   $\mathrm{2\,H_2 + O_2 \rightarrow 2\,H_2O}$
3. C.
   $\mathrm{2\,Mg + O_2 \rightarrow 2\,MgO}$
4. D.
   $\mathrm{Fe_2O_3 + 3\,CO \rightarrow 2\,Fe + 3\,CO_2}$

Tap an option to check your answer.