The Total solution for NCERT class 6-12
The ionization constant of acetic acid is1.74 × 10–5. Calculate the degree of dissociation ofacetic acid in its 0.05 M solution. Calculate the concentration of acetate ionin the solution and its pH.
Method 1
Since Ka >> Kw, :
Method 2
Degreeof dissociation,
c = 0.05 M
Ka = 1.74 × 10–5
Thus, concentration of CH3COO– = c.α
Hence,the concentration of acetate ion in the solution is 0.00093 M and its Ph is3.03.