Answer:
1.58 x 10^-7 M
Step-by-step explanation:
10^-7.20 or 1×10^-7.20mol.dm^-3
[H3O^+]= -log[H3O^+]
=antilog(-pH)
=antilog(-7.20)
=10^-7.20 mol.dm^-3
5.1m questions
6.7m answers