Cau 5 :

*dac  diem cua duong cong phan cuc:

-Vung1:vung dong hoc,toc do phan ung bi khong che boi cac yeu to dien hoa

-vung2:vung qua do

-vung3; vung khuech tan toc do phan ung khong bi khong che boi yeu to khuyech tan

+o vungI,II khi mat do dong dien tuong doi nho thi toc do phan ung chu lon lem,su k/tan dam bao cung cap hay thai kip thoi san pham ra khoi be mat phan ung

O vung 3 khi mat do dong dien lon su khuyech ta n khong kip va toan boqua trinh bi khong che boi khuyech tan

*dong gioi han :la dong ma khi do ,du tang dien the thi mat do dong dien cung tang duoc nua ,hay noi cach khac ,do la mat do dong dien  cuc dai dat duoc khi 1 phan tu phong dien

*y nghia igh

-khi dien the duoc tang lien tuc ,toc do phan ung dien cuc ko tang nua co nghia phan ung dat den toc do toi han

-toc do toi han phan biet ranh gioi giua vung ket tua kim loai  chat xit voi ket tua kim loai dang bot

-dua vao dd dong gioi han duoc ung dung trong phuong phap cuc pho de phan tich ion kim loai