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Question

Compound ‘x’ conducts electricity in the aqueous solution or molten state. Compound ‘y’ conducts electricity in the aqueous solution only. Compound ‘z’ does not conduct electricity in the molten state or in the aqueous solution. Predict the nature of bonds in x, y and z.


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Solution

1.Compound “X” conducts electricity in either aqueous state or molten state which means either by adding in the water or directly when heated to liquid form then the nature of bond is ionic bond.

Ex: NaCl is an ionic compound which is a solid crystal - on adding water and heating directly to melt it forms ions and conducts electricity.

2.Compound ‘y’ conducts electricity in the aqueous solution only then the nature of bond is polar covalent bond.

Ex: HCl is a polar covalent compound which conducts electricity on adding water due to the formation of H+ions.

3.Compound ‘z’ does not conduct electricity in the molten state or in the aqueous solution then the nature of bond is non-polar covalent bond.

Ex: Cl2 moelcule cannot form ions either in molten or aqueous state as it is non polar. Hence, do not conduct electricity.


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