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A Handbook States That to Prepare a Particular Buffer Solution

Question 84

Multiple Choice

A handbook states that to prepare a particular buffer solution mix 39.0 mL of 0.20 M aqueous NaH2PO4 with 61.0 mL of 0.20 M aqueous Na2HPO4.What will be the pH of this buffer? For phosphoric acid Ka2= 6.2 × 10-8


A) 7.2
B) 7.4
C) 7.0
D) 6.8
E) 6.6

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