What Is the PH of a Buffer Solution Prepared by Dissolving

question 99

Multiple Choice

What is the pH of a buffer solution prepared by dissolving 0.20 mole of cyanic acid (HCNO) and 0.80 mole of sodium cyanate (NaCNO) in enough water to make 1.0 liter of solution? [K_a(HCNO) = 2.0 × 10^-4]

• A) 0.97
• B) 3.10
• C) 4.40
• D) 3.70
• E) 4.30

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