Question

In Frasch process, how does $H_{2}S$ changes to sulphur.

Answer 1

$H_{2}S$ undergoes combustion to produce sulphur dioxide. More $H_{2}S$ reacts with this sulphur dioxide to form sulphur and water.

$2H_{2}S+3O_2\to 2S{O}_2+2H_{2}O$

$2H_{2}S+S{O}_2\to 3S+2H_{2}O$