pH and concentration Flashcards
1
Q
Lower pH
A
Higher no. of H+ ions
2
Q
Higher pH
A
Higher no. of OH- ions
3
Q
pH 7
A
No H+ or OH- ions
Water
4
Q
If pH goes down by one
A
It becomes 10x more concentrated
10x more H+ ions
5
Q
If pH goes down by two
A
it becomes 10 x 10 more concentrated
x100 more H+ ions
6
Q
Dilute
A
Few H+ particles
7
Q
Concentrated
A
More/lots of H+ particles
8
Q
Weak
A
e.g. ethanoic acid
Ionises only partially when put in a solution
Not many H+ ions
9
Q
Strong
A
e.g. hydrochloric acid
Fully ionises when put in a solution
lots of H+ ions
10
Q
Base
A
Anything that neutralises an acid
H+ + OH- -> H2O
11
Q
Alkali
A
Anything that neutralises an acid and is soluble
