# Problem: Calculate either [H3O+] or [OH–] for the solutions below at 25°C. a) [OH–] = 1.21 × 10–7 M     [H3O+] =  b) [H3O+] = 8.05 × 10–9 M     [OH–] =c) [H3O+] = 0.000589 M    [OH–] =Which of these solutions are basic at 25°C?

###### FREE Expert Solution ###### Problem Details

Calculate either [H3O+] or [OH] for the solutions below at 25°C.

a) [OH] = 1.21 × 107

[H3O+] =

b) [H3O+] = 8.05 × 109

[OH] =

c) [H3O+] = 0.000589 M

[OH] =

Which of these solutions are basic at 25°C?

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the pH and pOH concept. You can view video lessons to learn pH and pOH. Or if you need more pH and pOH practice, you can also practice pH and pOH practice problems.

What is the difficulty of this problem?

Our tutors rated the difficulty ofCalculate either [H3O+] or [OH–] for the solutions below at ...as medium difficulty.

How long does this problem take to solve?

Our expert Chemistry tutor, Dasha took 6 minutes and 16 seconds to solve this problem. You can follow their steps in the video explanation above.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Castellano's class at NCSU.