Final answer:
To find the pH, subtract the pOH from 14, resulting in a pH of 12.70. The hydronium ion concentration is 2.0 × 10^-13 M, and the hydroxide ion concentration is 5.0 × 10^-2 M.
Step-by-step explanation:
The pOH of an aqueous solution at 25°C is given as 1.30. To find the pH of the solution, we use the relation:
14.00 = pH + pOH
Using the pOH given, we calculate the pH as follows:
14.00 = pH + 1.30
pH = 14.00 - 1.30
pH = 12.70
To find the hydronium ion concentration, we use the pH and apply the inverse operation of the logarithm:
[H3O+] = 10^(-pH)
[H3O+] = 10^(-12.70)
[H3O+] ≈ 2.0 × 10^-13 M
For the hydroxide ion concentration, we use the pOH:
[OH^-] = 10^(-pOH)
[OH^-] = 10^(-1.30)
[OH^-] = 5.0 × 10^-2 M