Theme 7 - Understanding pH Measurements Flashcards
(8 cards)
1
Q
Denotes the concentration of Hydrogen in a solution
Ranges from 0-14
A
pH
2
Q
Low pH
ph < 7
A
High concentration of Hydrogen Ions
Low Concentration of Hydroxide Ions
3
Q
High pH
ph > 7
A
High concentration of Hydroxide Ions
Low Concentration of Hydrogen Ions
4
Q
pH 7
A
Neutral
e.g. - pure water
5
Q
pH Caculation
A
pH = -log[H+]
6
Q
pOH Caculation
A
pOH = -log[OH-]
7
Q
pH and pOH
A
pH + pOH = 14
(at 25˚C)
8
Q
e.g.- pH of 2
What does the number in pH denote?
A
The power of the Hydrogen concentration
e.g. - pH of 2 = 10 ^{-2} Hydrogen moles per Litre
