問題詳情

18. What ionic forms are present at pH 7.0? The pKas of phosphoric acid are 2.1, 7.2, 12.4.
(A) HPO4-2
(B) H2PO4-, 
(C) HPO4-2 and PO4-3
(D) H2PO4- and HPO4-2
(E) All are correct

參考答案

答案:99

統計:A:0,B:0,C:0,D:0,E:0

難度:計算中