問題詳情
二、 多選題：( 每題 4 分，每個選項 0.8 分；答錯 1 個選項，倒扣 0.8 分 )
31. 關於 H3POH3POH3PO2 敘述，正確者為：
(A)三者依次稱為磷酸、亞磷酸、次磷酸
(B)酸性：H3PO4＞H3PO3＞H3PO2
(C)氧化力：H3PO4＞H3PO3＞H3PO2
(D) 三者與不等量之 NaOH 中和，共可得到 6 種鈉鹽
(E)次磷酸鈉化學式為 Na 2HPO2 。
31. 關於 H3POH3POH3PO2 敘述，正確者為：
(A)三者依次稱為磷酸、亞磷酸、次磷酸
(B)酸性：H3PO4＞H3PO3＞H3PO2
(C)氧化力：H3PO4＞H3PO3＞H3PO2
(D) 三者與不等量之 NaOH 中和，共可得到 6 種鈉鹽
(E)次磷酸鈉化學式為 Na 2HPO2 。
參考答案
答案：[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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