A weak acid is 0.1% ionised in 0.1, M solution. Its pH is

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6-2.Equilibrium-II (Ionic Equilibrium)

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A weak acid is $ 0.1\% $ ionised in $0.1\, M $ solution. Its $pH$ is

A

$2$

B

$3$

C

$4$

D

$1$

Solution

(c) For a monobasic acid

$[{H^ + }] = C\alpha $

$ = \frac{1}{{10}} \times 0.001 = {10^{ – 4}}$ $⇒ pH = 4$

Standard 11

Chemistry

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