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how grignard reagent used to prepared ethane
ROH + CH3CH2MgBr = CH3CH3
any compound containing active hydrogen on treating with ethyl magnesium bromide gives ethane
Treat C2H5MgX with H2O or alcohol or any other H+ ion donor, in this way ethane would be formed
grignard reagent are very reactive, they abstract H atom from any source of proton and forms alkanes.
to prepare ethane u can take CH3CH2MgCl + H2O or dil HCl ------> CH3CH3