ionisation of water Flashcards
1
Q
what is Kw?
A
two constants multiplied together
2
Q
what is the Kw equation?
A
[H+][OH-]
- ionic product of water
3
Q
when does Kw change?
A
when temperature changes
4
Q
what is the value of Kw at room temperature?
A
1x10-4 mol2dm6
5
Q
how is pKw calculated?
A
-log(Kw
6
Q
the products of the 2 concentrations will equal what at 298k?
A
10-14
7
Q
describe the solution if [H] and [OH] are equal
A
neutral
8
Q
describe the solution if [H] increases
A
acidic
9
Q
describe the solution if [H] decreases
A
alkaline
