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KVPY2017ChemistryIonic Equilibrium

The pH of 0.1 M acetic acid solution is closest to [Dissociation constant of acid K _ a =1.8 10⁻⁵ ]

Options

  1. A2.87
  2. B1.00
  3. C2.07
  4. D4.76

Correct answer

A. 2.87

Step-by-step solution

[ H ⁺ ]= K _ a c = 1.8 10⁻⁵ 0.1 = 1.8 10⁻³ pH =3- (1.34)=2.87

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