Question

Why ammonia is used in complexometric titration of copper edta?

Answer 1

hey mate ur ans

EDTA is often used as the disodium salt, Na2H2Y . Carrying out the reaction in a basicbuffer solution removes the H+ as it is formed. ... Thus, if the solution is buffered to about pH 10.3, most of the EDTA will exist as Y4- ions. The metal ions will not have to remove the hydrogen ions from H2Y2- 


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Answer 2

Answer:

EDTA

Direct Titration- It is the most convenient and simple method of complexometric titration using EDTA. It is similar to acid-base titration technique. In this titration standard EDTA solution is added to given sample containing metals using burette till the end point is achieved.