The self ionisation constant for pure formic acid, has been estimated as 10-6 at 1.22g/cm3.
The percentage of formic acid molecules in pure formic acid converted to formate ion is
0.002 percentage
0.004 percentage
0.006 percentage
0.008 percentage
As we learned in concept
Ionization constant of weak acids -
Consider
- wherein
No. of moles of formic acid in one L of solution =
% dissociation =
Option 1)
0.002 percentage
Incorrect
Option 2)
0.004 percentage
Correct
Option 3)
0.006 percentage
Incorrect
Option 4)
0.008 percentage
Incorrect