Question

Consider the Ka values for the following acids:
Cyanic acid, HOCN, 3.5 x 10-4
Formic acid, HCHO2, 1.7 x 10-4
Lactic acid, HC3H5O3, 1.3 x 10-4
Propionic acid, HC3H5O2, 1.3 x 10-5
Benzoic acid, HC7H5O2, 6.3 x 10-5
Which has the strongest conjugate base?
A) propionic acid
B) benzoic acid
C) lactic acid
D) formic acid
E) cyanic

Answer

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