1.

Ethyl alcohol is used as a preservative for chloroform because it :

Answer»

Prevents aerial oxidation of chloroform
Prevents decomposition of chloroform
Decomposes phosgene to CO and `Cl_2`
REMOVES phosgene by converting it to ETHYL carbonate

Solution : `CHCl_3`on exposure to air forms phosgene which is POISONOUS gas and removed by converting it into DIETHYL carbonate (which is non-poisonous substance).
`CHCl_3overset(O_2//light)rarrunderset(("Phosgene Poisonous"))(COCl_2)+HCl`
`underset(("Diethyl carbonate non-poisonous"))(COCl_2+2C_2H_5OH)rarr(C_2H_5)_2CO_3+2HCl`


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