Carbonic acid, H₂CO3 is a diprotic acid with Ka1 = 4.3 x 107 and Ka2 = 5.6 x 10-¹1. What is the pH of a 0.40 M solution of carbonic acid?

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Chapter1: Chemical Foundations
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**Question:**

Carbonic acid, H₂CO₃, is a diprotic acid with Ka₁ = 4.3 × 10⁻⁷ and Ka₂ = 5.6 × 10⁻¹¹. What is the pH of a 0.40 M solution of carbonic acid?

**Calculator Interface:**

There is a calculator interface visible at the bottom right, which includes the following buttons arranged in four rows:

- First row: +/-; x10
- Second row: 7; 8; 9
- Third row: 4; 5; 6
- Fourth row: 1; 2; 3
- Fifth row: 0, a decimal point, C (clear), and an equals sign.

The question is displayed in the context of a science or chemistry educational setting, requiring calculations using the given acid dissociation constants to determine the pH of the solution.
Transcribed Image Text:**Question:** Carbonic acid, H₂CO₃, is a diprotic acid with Ka₁ = 4.3 × 10⁻⁷ and Ka₂ = 5.6 × 10⁻¹¹. What is the pH of a 0.40 M solution of carbonic acid? **Calculator Interface:** There is a calculator interface visible at the bottom right, which includes the following buttons arranged in four rows: - First row: +/-; x10 - Second row: 7; 8; 9 - Third row: 4; 5; 6 - Fourth row: 1; 2; 3 - Fifth row: 0, a decimal point, C (clear), and an equals sign. The question is displayed in the context of a science or chemistry educational setting, requiring calculations using the given acid dissociation constants to determine the pH of the solution.
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