explain laboratory preparation of h2s and so2
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It is prepared in the laboratory by treating Ferrous Sulphide sticks with dilute H2SO4.
FeS + H2SO4===== > FeSO4 + H2S
It can also be prepared by heating Sulphur in an Atmosphere of Hydrogen gas at 450°C
H2+ S===450°C======> H2S
It is prepared by heating Sulphur powder in an atmosphere of H2 at 450°C.
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