Inorganic and Applied Chemistry

Download free books at BookBooN.com

Inorganic and Applied Chemistry

pH log 3. 710

4      3. 4

Again we have for the completeness added the contribution to the H 3 O+ concentration for the

autoprotolysis of water, even though this is negligible compared to the calculated x-value. In this case the

contribution from the autoprotolysis may be neglected.

5.4 Ion effects on pH

We have in prior chapters seen how the presence of foreign ions may influence equilibrium. We shall in this

section. We shall in this section quite similar look at how the presence of H 3 O+ ions may influence pH. E.g.

will we look at a solution containing not just the weak acid (in general presented as HA), but also at the same

time contains its salt (in general presented as NaA). Even though it may seem as if we now have a

completely new type of problem it will in fact turn out to be a type of problem we can solve analogously to

prior problems. This we will look into in the following example.

Acids and bases

Please click the advert