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A Buffer Solution Is Prepared by Placing Twice the Concentration

Question 57
Multiple Choice
arrowQuestion 57arrow
Multiple Choice

A buffer solution is prepared by placing twice the concentration of propanoic acid (C2H5COOH,Ka=1.34 ×10−5)as the concentration of its conjugate base sodium propanoate into a flask.The pH of the resulting buffer solution is best described as which of the following?

A)less than 4.87
C)between 4.87 and 9.00
D)greater than 11.00
E)Undeterminable; the concentrations of the acid and conjugate base must be given.

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