Question

Give a chemical test to distinguish between the following pairs of compounds :
(i)
Chlorobenzene and cyclohexylchloride.
(ii)
Vinyl chloride and Ethyl chloride.
(iii)
n-Propylbromide and Isopropylbromide.​

Answer 1

The chemical tests to distinguish the pairs are

1)cyclohexylchloride undergoes reaction with KOH and gives cyclohexanol and KCland KCl reacts with AgNO​3 gives AgCl(white ppt)and KNO3 whereas chlorobenzene doesnot

2)To distinguish between cyclohexyl chloride and chlorobenzene, Add AgNO3 to cyclohexylchloride it will give ppt. of AgCl. In case of chlorobenzene no ppt. of AgCl will formed as the chlorine bond is stronger due to resonance

3) Isopropylbromide on reaction with KOH gives 2-propanol which on HCl and ZnCl2 gives 2-propylchloride which forms turbidity after 5 mins whereas n-propylbromide ​ on reaction with KOH gives propanol which on HCl and ZnCl2 gives 2ropylchloride wihch doesnot produce any turbidity

Answer 2

Answer:

A chemical test is defined as a qualitative or quantitative procedure used to determine or quantify a chemical compound.

Explanation:

There are several chemical test that helps to distinguish between two chemical compounds which seems alike but have different properties.

Some of the chemical test that distinguish given chemical compounds are as following:

i) Chlorobenzene and cyclohexylchloride

Chemical such as KOH,  dilute HNO3 and AgNO3 will use for this test. Add small quantity of aqueous KOH to both the compunds and acidify with   dil. HNO3. Then add   AgNO3 solution.

Chlorocylohexane will give white precipitation while chlorobenezene does not give this test.

ii) Vinyl chloride and Ethyl chloride

Bromine water can be used to distinguish between them. Vinyl chloride when react with bromine water will get decolorized while Ethyl chloride will not react with bromine water.

iii) n-Propylbromide and Isopropylbromide

Chemicals used are KOH, HCl and ZnCl2. When Isopropylbromide will react with KOH, it gives 2-propanol. 2-propanol the react with HCl and ZnCl2 and gives 2-propylchloride which leads to turbidity after 5 mins while n-propylbromide ​react with KOH to give propanol and propanol when react with HCl and ZnCl2 gives 2 - propylchloride and does not produce any turbidity.

Learn more about chemical test:

https://brainly.in/question/7966364

https://brainly.in/question/9524247