A) \[0.1\text{ }M\] difluoroacetic acid
B) \[0.1\text{ }M\] fluoroacetic acid
C) \[0.1\text{ }M\] chloroaceticacid
D) \[0.1\text{ }M\] acetic acid
Correct Answer: A
Solution :
Fluoro group causes negative inductive effect increasing ionisation thus \[0.1\text{ }M\] difluoroacetic acid has highest electrical conductivity. \[H-\underset{F}{\mathop{\underset{\downarrow }{\mathop{\overset{F}{\mathop{\overset{\uparrow }{\mathop{C}}\,}}\,}}\,}}\,-\leftarrow \overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-\leftarrow O-\leftarrow H\]
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