The of acetic acid is at 25 °C

CHEMISTRY · Single correct · AP · Chemistry · Acids and Bases · Acids and Bases

Problem

The

K_a

of acetic acid is

1.8\times10^{-5}

at 25 °C, whereas the

K_a

of chloroacetic acid is

1.3\times10^{-3}

. By what factor is chloroacetic acid stronger than acetic acid, as measured by the ratio

K_a(\text{chloroacetic})/K_a(\text{acetic})

? (a)

7.2

(b)

72

(c)

40

(d)

720