What is the pH in a solution of 1.0 M H₂A (K_a1 = 1.0 *10^-⁶; K_a2 = 1.0 *10^-¹⁴)? A) 10.00 B) 3.00 C) 4.00 D) 13.00 E) 7.00

Name: What is the pH in a solution of 1.0 M H 2 A (K a1 = 1.0 *10 - 6 ; K a2 = 1.0 *10 - 14 )? A) 10.00 B) 3.00 C) 4.00 D) 13.00 E) 7.00
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Quizplus · Accepted Answer

The first dissociation constant (Ka1) is much larger than the second (Ka2), so the pH is primarily determined by the first dissociation. For a weak acid like H2A with Ka1 = 10^-6, the pH is approximately 3.00.

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