0
Why pink colour of edta changes to blue at the end point in the edta titration of water using erochrome black-t indicator?
Wiki User
∙ 11y agoWant this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
How old is prince Paris and blackt?
Prince was born February 13, 1997. Paris was born April 3, 1998 and Prince II or Blanket was born February 2002. His day of birth is unknown but some say it's the 21st.
Why is magnesium sulphate added in the assay of calcium lactate?
Replacement Titration: In this method the metal, which is to be analyzed, displaces quantitatively the metal from the complex. When direct or back titrations do not give sharp end points, the metal may be determined by the displacement of an equivalent amount of Mg or Zn from a less stable EDTA complex. Mn+2 + Mg EDTA---> 2 Mg+2 + Mn EDTA-2 Mn displaces Mg from Mn EDTA solution. The freed Mg metal is then directly titrated with a standard EDTA solution. In this method, excess quantity of Mg EDTA chelate is added to Mn solution. Mn quantitatively displaces Mg from Mg EDTA chelate. This displacement takes place because Mn forms a more stable complex with EDTA. By this method Ca, Pb, Hg may be determined using Eriochrome blackT indicator.
