The [H + ] of a resulting solution that is 0.01 M acetic acid (K a = 1.8 x 10 -5 ) and 0.01 M in benzoic acid (K a = 6.3 x 10 -5 ) is

Question

The [H + ] of a resulting solution that is 0.01 M acetic acid (K a = 1.8 x 10 -5 ) and 0.01 M in benzoic acid (K a = 6.3 x 10 -5 ) is, 9 x 10 -4, 81 x 10 -4, 9 x 10 -5, 2.8 x 10 -3

MARKS App · Accepted Answer

H + = k 1 C 1 + k 2 C 2 (for mixture of two weak acids) = 1.8 × 1 0 - 5 × 0.01 + 6.3 × 1 0 - 5 × 0.01 = 18 × 1 0 - 8 + 6 3 × 1 0 - 8 = 9 × 1 0 - 4

Search any question & find its solution

Looking for more such questions to practice?