How do I Calculate the pH of a 0.34 M solution of NaHSO4?

Question

I do not know what the K value is and I have no idea how to find it... =(

Answer 1

It is listed as the second ionisation of sulphuric acid, Ka value 1.2 x 10^-2 (pKa 1.9).

To find the pH of the solution, you go through the usual RICE procedure for dissociation of a weak acid, except that unfortunately you cannot assume that the percentage of dissociation is small, so you cannot simplify at the end and have to solve the quadratic.

Further details: x^2/(0.34 - x) = 0.012 is correct

Over to you.  Good luck.

Answer 2

you p**p it