7.4.2准确滴定的条件以及酸度条件ZHEHANUNIVERSUSCIENCEATECHNOLO1.实现准确滴定的条件*Igcmk稳≥6;米有灵敏可靠的指示剂或其它终点确定方法2.滴定的酸度条件（1）滴定的最高酸度（最低pH值）IgK,My= IgKMy- Igay(E)Igar(H)≤lgCm+lgK-6IgCMk稳≥6求得lgay()1然后查表求得最低pH值将各种金属离子的IgKMy与相应的最低pH值作图，可得“酸效应曲线”10Zhang Li-qing
7.3.2影响配位平衡的主要因素ZHEHIANGUNIVERSITYOFSCIENCESTECHNOLOpHpHpHgar(H)lgar(H)lgay(H)23.648.850.03.87.52.788.4421.324.08.00.42.27不同pH7.6419.084.48.50.81.77值时的1.04.86.8418.019.01.28Igay():5.09.56.451.416.020.831.810.05.6914.275.40.452.05.84.9810.613.510.162.46.04.6512.1911.00.072.86.44.0611.611.090.023.0返回例23.5512.010.606.80.017.03.43.3213.0返回19.700.0011ZhangLi-qing
7.4.2准确滴定的条件以及酸度条件ZHEJHANGUNIVERSITYOFSCIENCEATECHNOLOG酸效应曲线（或林邦曲线）pH14第一次111010.022第二次9Mg23第三次8Ca75T6F±2+ 5.0553Mm4.1A14Pb3.3Zn33.81.81.023+Fesn1Bi0.708182014162224122610281gKMY024681416181012201gaY(H)12Zhang Li-qing