Question

68.(a) Distinguish between ionic and covalent compounds under the following properties:
(i) Strength of forces between constituent elements.
(ii) Solubility of compounds in water.
(iii) Electrical conduction in substances.
(b) Explain how the following metals are obtained from their compounds by the reduction process:
(i) Metal M which is in the middle of the reactivity series.
(ii) Metal N which is high up in the reactivity series.
Give one example of each type.​

Answer 1

Answer:A)

1)ionic compound has a very strong inter-ionic forces whereas covalent compounds have comparitively weaker attractive forces between the constituent elements.

2)ionic compounds are soluble in polar solvents such as water but insoluble in polar solvents such as petrol, kerosene etc. whereas covalent compounds are soluble in petrol and kerosene and insoluble in water.

3)ionic compounds conduct electricity in molten form but covalent compounds do not conduct electricity as they do not dissociate into water

B)

metal m will be obtain by the process of calcination or roasting depending upon its ore

( calcination- if its carbonate ore is present ,

roasting -if it's sulphide ore is present ) after the above process metal oxide will form which

will then reduced to pure metal. for eg - zinc

metal N would be obtained by its electrolitic refining. for eg - sodium

Answer 2

Explanation:

the strength between ionic compounds are greater than as compared to covalent compounds .

ionic compound is soluble in water whereas covalent compounds are not

M is reduced by reducing agents like carbon carbon dioxide and hydrogen

metal M is reduced by electrolytic reduction