Question

What is the poH of a solution that has an [H+] = 7.7 x 10-7 M? *
O 7.9
6.5
O 2.3

Answer 1

7.9

Step-by-step explanation:

pH=-log([H+])

pH=-log(7.7×10⁻⁷M)

pH=6.113509275

Now, poH + pH = 14

Making poH the subject,

poH=14-pH

poH=14-6.113509275

poH=7.886490725

≈7.9

∴poH≈7.9