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Degree of ionisation of 1 M HCOOH is decreased to a maximum extent in presence of:(A) 1 M HCHO(B) 1 M NaOH(C) 1 MHCOONa(D) equally in all

Harish , 7 Years ago
Grade 12
anser 2 Answers
Arun

Last Activity: 7 Years ago

Degree of ionisation of 1 M HCOOH should be decreases,
If it reacts with a base.
Now 
HCOOH is an acid while NaOH is a base.
Hence correct option should be 'B'

Souvik Mukherjee

Last Activity: 7 Years ago

Correct answer will be option C i.e. HCOONa, because being a salt it will completely dissociate and form ample amount of H+ ions which will decrease the dissociation of HCOOH via common ion effect by shifting the HCOOH dissociation equilibrium in backward direction.

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