chem 超急問 天日會考 謝謝

number 2 is a bleaching agent.
acidified sulphuric acid must be added to the solution
to perform the bleaching power.
the sulphur dioxide formed will reduce a compound .
so perform the bleaching action.
molten graphite can conduct electricity.
it is because it still contains mobile electrons.
2NaOCl + H2SO4 ------> Na2SO4 + 2 HOCl