Question #c179b
1 Answer
How about these?
Explanation:
A). Tetrachloromethane and butane
Look at them.
Butane is a gas at room temperature and has an odour like natural gas.
B). 1-propanol and 2-methylpropan-2-ol
Do the Lucas test.
To the alcohol add a few drops of an equimolar mixture of concentrated
The acid protonates the alcohol, and the nucleophile
The 3 ° alcohol is much more reactive than the 1 ° alcohol, and the alkyl halide is insoluble in water.
Thus, a 3 ° alcohol forms an oily layer immediately.
A 1 ° alcohol forms an oily layer only on heating.
C). Pentanamine and pentane
The odour alone should be sufficient.
Pentanamine has an ammonia-like odour, while pentane has a gasoline-like (petrol-like) odour.
If you need a chemical test, just add a few drops if each to a test-tube containing hydrochloric acid.
The basic amine will immediately be neutralized to form the soluble ammonium salt, while pentane is insoluble in water.
D). Pent-1-ene and benzene
To each, add a few drops of
The alkene will decolourize the bromine immediately; the benzene will not react.