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Hydrosulfuric Acid Is a Diprotic Acid, for Which Ka1 =

Question 19

Multiple Choice

Hydrosulfuric acid is a diprotic acid, for which Ka1 = 5.7 * 10-8 and Ka2 = 1 * 10-19. Determine the concentration of sulfide ion in a 0.10 M hydrosulfuric solution.


A) 0.10 M
B) 7.5 * 10-5 M
C) 5.7 * 10-9 M
D) 1 * 10-19 M
E) 1 * 10-20 M

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