formic acid is used to make methyl formate. what is the pH of a .12 M solution of formic acid? what is the degree of ionization of HCHO2 in this solition
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formic acid is used to make methyl formate. what is the pH of a .12 M solution of formic acid? what is the degree of ionization of HCHO2 in this solition
The ionisation reaction of formic acid is given by
HCHO2 ----> H+ + CHO2- Ka = 1.77 X 10-4
Assuming y concentration of formic acid is ionising
=> concentration of formic acid remaining = initial - ionised = 0.12 - y = [HCHO2 ]
hence concentration of ions formed is ( from the above reaction, coefficients are 1 => formic acid ionised = ion concentration)
[H+ ] = [CHO2- ] = y
Since Ka = [H+ ] X [CHO2- ] / [HCHO2 ]
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