[OH-]=1x10-9
[OH-]=1x10-4
[OH-]=1x10-12
[H+]=1x10-14
[H+]=1x10-3
[H+]=1x10-2
[OH-]=1x10-7
[H+]=1x10-5
[H+]=1x10-11
[OH-]=1x10-5
pOH=12
pOH=5
pOH=4
pOH=7
pH=5
pOH=9
pH=2
pH=11
pH=3
pH=14
