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A 010 M Solution of a Weak Monoprotic Acid Has a a Hydronium-Ion

Question 27

Multiple Choice

A 0.10 M solution of a weak monoprotic acid has a hydronium-ion concentration of 7.2 × 10-4 M.What is the acid-ionization constant,Ka,for this acid?


A) 2.7 × 10-2
B) 6.3 × 10-3
C) 7.2 × 10-4
D) 5.2 × 10-6
E) 8.6 × 10-5

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