Halogens are coloured and the colour deepens on moving down in the group from fluorine to iodine.
Give balanced equations for the following reaction:
Acetic acid reacts with phosphorous pentachloride.
Give one chemical test each to distinguish between the following pairs of compounds:
(1) Ethanol and acetic acid
(2) Acetaldehyde and benzaldehyde
(1) Acetic acid on the action of sodium bicarbonate gives CO2 gas.
Ethanol does not react with sodium bicarbonate.
(2)