12.14 - Analysing Data From pH Measurements Flashcards
1
Q
How can the relative strengths of acids be determined?
A
By measuring the pH of equimolar aqueous solutions of the acids, at the same temperature
2
Q
The higher the value of the pH, the ______ the acid
A
Weaker
3
Q
How about bases?
A
The same, but a higher pH indicates a strong base
4
Q
What does a pH less than 7 for a salt indicate about its composition?
A
Comprised of a strong acid and weak base
5
Q
What does a pH of 7 for a salt indicate about its composition?
A
Strong acid with a strong base
6
Q
What does a pH more than 7 for a salt indicate about its composition?
A
Comprised of a strong base with a weak acid
7
Q
How about a weak acid with a weak base (3 options)?
A
Ka = Kb -> pH = 7
Ka > Kb -> pH < 7
Ka < Kb -> pH > 7
8
Q
What causes pH to increase by 1?
A
Dilution by 10 parts
