Question

Fill in the blanks.
___________ sulphur is prepared by passing hydrogen sulphide gas into an aqueous solution of sulphur dioxide.

Answer 1

Colloidal sulphur is prepared by passing hydrogen sulphide gas into an aqueous solution of sulphur dioxide in water.

${SO}_2+H_{2}S\underset{}{\overset{}{\to }}{2H}_{2}O+3S{H}_{2}S+\left[O\right]\underset{}{\overset{}{\to }}{H}_{2}O+S$