What happens when S reacts with hot and conc. H2SO4?
H2SO3
SO3
H2S2O8
SO2
When S reacts with hot and conc. H2SO4 it forms SO2.
S + 2H2SO4 (conc) → 2SO2 +2H2O
What happens when acetic acid reacts with ethanol in presence of conc. H2SO4 ?