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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? [Ka(HCNO) = 2.0 × 10-4]


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

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