Calculate the pH of the following aqueous solution: 0.5 M H₂CO₃ (pK_a1 = 6.37;pK_a2 = 10.25).Choose your answer from the following pH ranges: A)pH 0.00-2.99 B)pH 3.00-5.99 C)pH 6.00-8.99 D)pH 9.00 -10.99 E)pH 11.00-14.00

Question

Quizplus · Accepted Answer

H₂CO₃ is a weak acid, and the first dissociation (pKa1 = 6.37) is the most relevant for pH calculation. Since 0.5 M is a relatively high concentration for a weak acid, the pH will be below the pKa1 value, placing it in the range of 3.00-5.99.

Calculate the PH of the Following Aqueous Solution: 0