# Problem: Consider a solution that is 0.10 M in a weak triprotic acid which is represented by the general formula H3A with ionization constants K1 = 1.0 × 10−3 , K2 = 1.0 × 10−8 , and K3 = 1.0 × 10−12. What is the pH of the solution? 1. 2.15 2. 2.25  3. 2.02 4. 2.35 5. 2.54

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Consider a solution that is 0.10 M in a weak triprotic acid which is represented by the general formula H3A with ionization constants K1 = 1.0 × 10−3 , K2 = 1.0 × 10−8 , and K3 = 1.0 × 10−12. What is the pH of the solution?

1. 2.15

2. 2.25

3. 2.02

4. 2.35

5. 2.54

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 Polyprotic Acid concept. You can view video lessons to learn Polyprotic Acid. Or if you need more Polyprotic Acid practice, you can also practice Polyprotic Acid practice problems.

What is the difficulty of this problem?

Our tutors rated the difficulty ofConsider a solution that is 0.10 M in a weak triprotic acid ...as medium difficulty.

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