摘要
This essay analyses the unreliability of the existing criterion (ΔpK≥4、c 0K n≥10 -8 ),when employed in judging the feasibility of stepwise titration polybasic acids or bases,and the possible causes.A common and concrete criterion is obtained throungh accurate deductions.Verification tells that this new criterion is in good accordance with the practice.
This essay analyses the unreliability of the existing criterion (ΔpK≥4、c 0K n≥10 -8 ),when employed in judging the feasibility of stepwise titration polybasic acids or bases,and the possible causes.A common and concrete criterion is obtained throungh accurate deductions.Verification tells that this new criterion is in good accordance with the practice.
出处
《化学研究与应用》
CAS
CSCD
2000年第3期324-327,共4页
Chemical Research and Application
关键词
多元酸碱
分级滴定
可行性
终点误差
滴定突跃
polybasic acids or bases
stepwise titration
feasibility
titration error
titration jump
