Exercise 17.52 Part A Calculate [Hs0 and [OH] for each of the following pH 8.50

Question

Exercise 17.52 Part A Calculate [Hs0 and [OH] for each of the following pH 8.50 Express your answer using two significant figures. Enter your answers numerically separated by a comma. solutions. AEd Submit My Answers Give Up Part B pH = 11.20 Express your answer using two significant figures. Enter your answers numerically separated by a comma. H3o OH6.3x10 12,1.6x10-3 M Submit My Answers Give Up Correct Part C pH 2.82 Express your answer using two significant figures. Enter your answers numerically separated by a comma. AEd Submit My Answers Give Up Continue

Explanation / Answer

A. pH = 8.5 , so the solution should be basic , let us calulate concentration of hydroxide ion first

pOH = 14- pH = 5.5

-log [OH-] = 5.5

so log [OH-] = -5.5

Taking antilog

[OH-] = 3.16 X 10^-6

[H+] = 10^-14 / 3.6 X10^-6 = 3.16 X 10^-9

B. Similarly pH = 2.82

-log [H+] = 2.82

log [H+] = -2.82

Taking antilog

[H+] = 1.51 X 10^-3

so [OH-] = 10^-14 / 1.51 X 10^-3 = 6.62 X 10^-12

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