Question

PLS HELP DUE NOW

What is the pH of each solution?

[H3O+] = 4.78 x 10-2 M
and
pOH = 4.56

Answer 1

First solution pH = 1.32

Second solution pH = 9.44

Step-by-step explanation:

For the first solution:

• [H₃O⁺] = 4.78 x 10⁻² M

Which is the same as saying 4.78 x 10⁻² M is [H⁺].

Knowing [H⁺], we can now calculate the pH:

• pH = -log[H⁺]

• pH = 1.32

As for the second solution, we can calculate the pH by keeping in mind the relationship between pOH and pH:

• pOH + pH = 14

• 4.56 + pH = 14

• pH = 9.44