Proteins

Detergents

Soap

$\text{S}_8$ sulphur molecules

$\text{NO}\text{(g)} + \text{O}_3\text{(g)} \longrightarrow \text{NO}_2\text{(g)} + \text{O}_2\text{(g)}$

$2\text{KI}\text{(aq)} + \text{H}_2\text{O}\text{(l)} + \text{O}_3\text{(g)} \longrightarrow 2\text{KOH}\text{(aq)} + \text{I}_2\text{(g)} + \text{O}_2\text{(g)}$

$\text{H}_2\text{O}_2\text{(l)} + \text{O}_3\text{(g)} \longrightarrow \text{H}_2\text{O}\text{(l)} + 2\text{O}_2\text{(g)}$

$\text{PbS}\text{(s)} + 4\text{O}_3\text{(g)} \longrightarrow \text{PbSO}_4\text{(s)} + 4\text{O}_2\text{(g)}$

$+1$

$-1$

$+3$

$-3$

$\text{Fe}^{2+}$ and $\text{Mn}^{2+}$

$\text{Co}^{2+}$ and $\text{Ni}^{2+}$

$\text{Fe}^{2+}$ and $\text{Cr}^{2+}$

$\text{Co}^{2+}$ and $\text{Fe}^{2+}$