# pH of a Mixed Solution

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1) Calculate the pH when equal volumes of 0.100 M of H2PO3- and 0.02 M HCl are mixed.

2) Calculate the percentage dissociation of acetic acid at pH = 3.69.

https://brainmass.com/chemistry/acids-and-bases/ph-mixed-solution-26636

#### Solution Preview

1)

pH = pKa + log{[H2PO3-]/[HCl+H3PO3]}

Ka of H3PO3 = 3.7*10-2

pH = 1.432 + log{[0.1]/[0.02+X]} = 2.13 ...

#### Solution Summary

The solution lays out all the calculations and steps necessary to find the pH of a mixed solution and the percentage dissociation of acetic acid at a certain pH in a clear, concise manner.

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