阿摩線上測驗
5. The phosphate buffer system is maximally effective at a pH close to its pKa of 6.86. What is the pH of a mixture of 0.5 M NaH2PO4 and 0.05 M Na2HPO4?
(A) 5.86
(B) 6.86
(C) 7.19
(D) 7.86
(A) 5.86
(B) 6.86
(C) 7.19
(D) 7.86
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統計： A(3), B(1), C(3), D(0), E(0) #3331899
統計： A(3), B(1), C(3), D(0), E(0) #3331899
