Calculating the ph of a weak acid calculate the ph of a 1 m solution of hydrofluoric acid (hf, k, 7.2 x 101)

The pH of weak acid is 1.001

Explanation:

We are given:

Concentration of HF = 0.1 M

The chemical equation for the dissociation of HF follows:

Initial:               0.1

At eqllm:        0.1-x     x     x

The equation for equilibrium constant follows:

We are given:

Putting values in above equation, we get:

Neglecting the negative value of 'x' because concentration cannot be negative

So, concentration of = 0.0998 M

To calculate the pH of the solution, we use the equation:

Hence, the pH of weak acid is 1.001

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