Simple back titration

  • #1
Krushnaraj Pandya
Gold Member
697
73

Homework Statement


20 ml of decinormal HCl soln. is added to 10 ml decinormal AgNO3 soln. AgCl is precipitated out and excess of acid was back titrated against a decinormal NaOH soln., What volume of NaOH was required for the back titration?

2. The attempt at a solution
10 ml HCl reacts with 10 ml AgNO3. 10 ml HCl is left. Now Do we consider HNO3 formed also, since then it'd require 20 ml NaOH. If we consider only HCl it'd be 10
 
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Answers and Replies

  • #2
Borek
Mentor
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It hardly counts as a back titration, you are perfectly right that all H+ present initially have to be neutralized (which means there is no way of checking how much Ag+ was present).
 
  • #3
Krushnaraj Pandya
Gold Member
697
73
It hardly counts as a back titration, you are perfectly right that all H+ present initially have to be neutralized (which means there is no way of checking how much Ag+ was present).
Ah! alright, thank you
 

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