Liquid Solution

1.0 L of $0.25 \mathrm{M} \mathrm{Na}_2 \mathrm{CO}_3(106 \mathrm{u})$

0.25 L of $0.2 \mathrm{M} \mathrm{Na}_2 \mathrm{SO}_4(142 \mathrm{u})$

0.5 L of $1.0 \mathrm{M} \mathrm{KMnO}_4(158 \mathrm{u})$

0.75 L of $0.5 \mathrm{M}\left(\mathrm{NH}_2\right)_2 \mathrm{CO}(60 \mathrm{u})$