Determine the pH of a 0.741 M LiOH solution at 25°C.
A) 0.130
B) 13.87
C) 0.741
D) 13.26
E) 1.18

Name: Determine the pH of a 0.741 M LiOH solution at 25°C. A) 0.130 B) 13.87 C) 0.741 D) 13.26 E) 1.18
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Quizplus · Accepted Answer

LiOH is a strong base, so it dissociates completely in water. The concentration of OH- ions is equal to the concentration of LiOH, which is 0.741 M. To find the pOH, use the formula pOH = -log[OH-]. pOH = -log(0.741) = 0.130. Since pH + pOH = 14 at 25°C, pH = 14 - pOH = 14 - 0.130 = 13.87.

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