K a for butyric acid C 3 H 7 COOH is 2 × 10 - 5 . The pH of 0 . 2 M solution of butyric acid is____ × 10 - 1 . (Nearest integer) [Given log 2 = 0 . 30 ]

Question

K a for butyric acid C 3 H 7 COOH is 2 &#215; 10 - 5 . The pH of 0 . 2 M solution of butyric acid is____ &#215; 10 - 1 . (Nearest integer) [Given log 2 = 0 . 30 ]

Aicharya · Accepted Answer

K a of Butyric acid &#8658; 2 &#215; 10 - 5 &#160; &#160; &#160; &#160; &#160; &#160; &#160; pK a = - logK a &#160; = &#160; 4 . 7 pH of weak acid solution pH = 1 2 pK a - 1 2 logC = 1 2 4 &#183; 7 - 1 2 log 0 . 2 = 2 . 35 + 0 . 35 = 2 . 7 pH = 27 &#215; 10 - 1

K a for butyric acid C 3 H 7 COOH is 2 × 10 - 5 . The pH of 0 . 2 M solution of butyric acid is____…

Solution

K a for butyric acid C 3 H 7 COOH is 2 &#215; 10 - 5 . The pH of 0 . 2 M solution of butyric acid is____…

Solution

K a for butyric acid C 3 H 7 COOH is 2 × 10 - 5 . The pH of 0 . 2 M solution of butyric acid is____…