The Ka of hypochlorous acid (HClO) is 3.00 x 10-8. What is the pH at 25 ∘C of an aqueous solution that is 0.0200 M in HClO?

Explanation:

Hello,

In this case, the dissociation of hypochlorous acid is:

Therefore, the law of mass action for equilibrium is written as:

And can also be written introducing the reaction extent ():

Thus, solving for we obtain:

Which is also equal to the concentration of H⁺ in the solution. Thereby, the pH turns out:

Which is substantiated by the fact it is about an acid (pH lower than 7).

Regards.

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explanation:

o conteúdo de calor de um sistema é igual à entalpia apenas para um sistema que é constante