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  4. Ethanol when warmed with iodine and sodium carbonate gives a yellow coloured crystalline solid, which is used in preparation of antiseptic ointments. The yellow coloured crystalline substance is

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Q. Ethanol when warmed with iodine and sodium carbonate gives a yellow coloured crystalline solid, which is used in preparation of antiseptic ointments. The yellow coloured crystalline substance is

COMEDKCOMEDK 2015Alcohols Phenols and Ethers

Solution:

$\underset{\text{Ethanol}}{CH_3CH_2OH } + I_2 + Na_2CO_3 \rightarrow \underset{\text{Iodpform (yellow ppt.)}}{CHI_3} + HCOONa + Nal + H_2O + CO_2 $