General Chemistry
Calculate the pH of i) 0.300 M and ii) 0.030 M HNO2 solution. In which case do you have to use the quadratic formula? The Ka of HNO2 is 4.0 × 10–4.
The pH for a 0.75 M acid solution is 4.67. Determine the Ka for the acid.
Boric acid has a pKa of 9.27. What is the pH of a 0.045 M solution of boric acid?
What is the pH of 0.450 M H HF solution? Can we apply the assumption that x is small?
