Which of the following solutions has the greatest buffer capacity?
A) A 1.0 L aqueous solution of 1.00 M HCl
B) A 1.0 L mixture of 1.00 M H3PO4 and 1.00 M H2PO4−
C) A 1.0 L mixture of 1.00 M H3PO4 and 0.500 M NaOH
D) A 1.0 L mixture of 1.00 M H2PO4− and 1.00 M HCl
E) A 1.0 L aqueous solution of 0.75 M H2SO4
Correct Answer:
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