Back  

Titration photographs of 1cm3 cupric chloride etchant diluted in 30 cm3 water and using 1M sodium hydroxide solution as a titrant.


before titration titration solution titration solution titration solution
Solution before any sodium hydroxide added. After about 8 drops of sodium hydroxide added (before stirring).
 Solution after partly stirring Copper hydroxide re-dissolves in acid upon complete stiring.


  .
titration solution titration solution titration solution
The first signs of visible cloudyness after adding a drop of sodium hydroxide. This is the end point of titration.
 The solution one drop past the end point
 The solution two drops past the end point.

Back