We’re being asked to calculate the pH of a pH of a solution formed by mixing 100.0 mL of 0.100 M NaF and 100.0 mL of 0.060 M HCl.
NaF is a salt and it will break up in the solution:
NaF → Na+(aq) + F-(aq)
F- is a conjugate base and of a weak acid (HF):
HF + H2O(l) → F-(aq) + H3O+(aq)
(weak acid) (conjugate base)
HCl will react with F-:
Reaction: NaF(aq) + HCl(aq) → HF(aq) + NaCl(aq)
We will calculate the pH of the solution using the following steps:
Calculate the pH of a solution formed by mixing 100.0 mL of 0.100 M NaF and 100.0 mL of 0.060 M HCl. Ka of HF = 7.24 x 10-4.
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Buffer concept. You can view video lessons to learn Buffer. Or if you need more Buffer practice, you can also practice Buffer practice problems.
What professor is this problem relevant for?
Based on our data, we think this problem is relevant for Professor Limbrick's class at MERCER.