The highest electrical conductivity of the following aqueous solutions is of:

0.1 M

acetic acid

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0.1 M

chloroacetic acid

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0.1 M

fluoroacetic acid

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0.1 M

difluoroacetic acid

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Solution

The correct option is D $0.1 M$ difluoroacetic acid
Conduction of electric charge depends on the ions. Higher the number of ions higher the electrical conductivity. So, find the acid which gives stable ions in solution. Fluoro group causes negative inductive effect increasing ionisation, thus $0.1 M$ difluoroacetic acid has highest electrical conductivity. Refer to the image.

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