甲苄胂酸电离常数及其若干酸式盐溶度积测定
来源期刊:中南大学学报(自然科学版)1983年第3期
论文作者:朱玉霜
文章页码:29 - 38
关键词:电离常数; 溶度积测定; 离子强度; 酸式盐; 苄胂酸; 金属离子; 示波极谱法; 捕收剂; 氢氧化钾溶液; 高氯酸钠
摘 要:本文用pH法测定了甲苄胂酸的逐级电离常数,用示波极谱法测定了甲苄胂酸与Mn(Ⅱ)、Pb(Ⅱ)、Zn(Ⅱ)、Cu(Ⅱ)形成的酸式盐的溶度积。
Abstract: The ionization constants of methyl benzyl arsonic acid have been deter-mined by pH method at 25℃, that is, pK10=3.92, pK20=7.82. The solubility products of some methyl benzyl hydrogen arsonates havebeen determined with polarography, resulting in 1.449×10-14 for Cu(HL)21.469×10-14 for Pb (HL)2, 9.609×10-13 for Zn(HL)2 and 1.259×10-12 for Mn(HL)2.