Calculate the pOH of a 0.70 M solution of acetic acid (K_a = 1.8 *10^-⁵) at 25°C.

Name: Calculate the pOH of a 0.70 M solution of acetic acid (K a = 1.8 *10 - 5 ) at 25°C.
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Question

Quizplus · Accepted Answer

To calculate the pOH, first find the pH by using the formula for weak acids: pH = 1/2(pKa - log[HA]). Here, pKa = -log(1.8 x 10^-5) = 4.74. Then, pH = 1/2(4.74 - log(0.70)) ≈ 2.45. Finally, pOH = 14 - pH = 14 - 2.45 = 11.55.

Calculate the POH of a 0