3.络合物的副反应系数ay M+Y= MY 强酸碱性溶 OH MHYM(OHY液中要考虑 计算:pH=30、50时的gmnm 查附录表I4K(ZmHY)=1030 pH=3.0,0m1)=1+1030+3.0=2,gN/≈0.3 pH=5.0, aznY()=1+10-5. 0t3. =1, 1gaznY(H=010 3. 络合物的副反应系数αMY M + Y = MY H+ OH￾MHY M(OH)Y 计算：pH=3.0、5.0时的lgαZnY(H) 强酸碱性溶 液中要考虑 查附录表III.4 K(ZnHY)=103.0 pH=3.0, αZnY(H)=1+10-3.0+3.0=2 , lgαZnY(H)= 0.3 pH=5.0, αZnY(H)=1+10-5.0+3.0=1, lgαZnY(H)= 0