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

question 38

Multiple Choice

A 0.10 M solution of a weak monoprotic acid has a hydronium-ion concentration of 8.0 × 10^-4 M.What is the acid-ionization constant,K_a,for this acid?

• A) 2.8 × 10^-2
• B) 7.5 × 10^-3
• C) 8.0 × 10^-4
• D) 6.4 × 10^-6
• E) 9.6 × 10^-5

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Definitions:

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Dividend Yield

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Price/earnings Ratio

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