The pH Scale Flashcards
1
Q
What has a pH of 2-3?
A
Lemons
2
Q
What has a pH of 3.5 to 4.7?
A
Tomatoes
3
Q
What has a pH of 4.5 to 6?
A
Coffee
4
Q
What has a pH of 6.7 to 6.9?
A
Milk
5
Q
What has a pH of 2 to 4?
A
Vinegar
6
Q
What has a pH of 11 to 14?
A
Washing powder
7
Q
What has pH of 8?
A
Eggs
8
Q
What has a pH of 9?
A
Baking soda
9
Q
What has a pH of 9 to 10?
A
Milk of magnesia
10
Q
What has a pH of 11.6?
A
Ammonia
11
Q
What has a pH of 9 to 10?
A
Cold process soap
12
Q
What has a pH of 12 to 13?
A
Bleach
13
Q
What has a pH of 14?
A
Liquid drain cleaner
14
Q
pH curves
A
- Just alkali
- Some acid is added but the alkali reacts with it and the pH remains high
- This continues until enough acid is added to neutralise the mixture (pH 7) and the acid and alkali
- As soon as more acid is added the mixture turns acidic
- The pH begins to level off as more acid is adde to the mixture
