Lösung:
- (a) correctly
pH = 7 → c(H3O+) = 10-7 mol/l;
pH = 8 → c(H3O+) = 10-8 mol/l - (b) correct
especially at pH=7, c(H3O+) = c(OH–) - (c) wrong.
pH=8 → c(H3O+) = 10-8 mol/l;
pOH = 14-pH = 6 → c(OH–) = 10-6 mol/l
so c is(H3O+) 100· times less than c(OH–)