# Given 100.0 mL of a buffered solutions which is 0.30 M #HF# and 0.30 M #NaF# and the Ka of #HF# to be 7.2 x 10^4, how do you find the pH of this buffer?

##### 1 Answer

Oct 20, 2016

I assume that the value of

#### Explanation:

For which:

These are equilibrium concentrations.

Rearranging gives:

Assuming we have been given equilibrium concentrations these will be the same so: