Which of the following 0.10 M aqueous solutions has the lowest pH? A) B(OH)₃ B) HIO C) C₂H₅NH₃Cl D) C₆H₅OH

Question

Quizplus · Accepted Answer

B(OH)₃ is a weak base, so it will have the highest pH. HIO is a weak acid, so it will have a lower pH than B(OH)₃. C₂H₅NH₃Cl is a salt of a weak base and a strong acid, so it will have a pH close to 7. C₆H₅OH is a weak acid, so it will have a lower pH than C₂H₅NH₃Cl. Therefore, the correct answer is A.

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