9. The % w/w of I- in a 0.2144-g sample was determined by Volhard titration. After adding 50.00 mL of 0.04980 M AGNO3 and allowing the precipitate to form, the remaining silver was back titrated with 0.05322 M KSCN, requiring 22.76 mL to reach the end point. (MM of I = 126.904 g/mol) Reactions: Ag*+I"→ Agl Ag* + SCN¯ → Ag(SCN) Calculate the:
9. The % w/w of I- in a 0.2144-g sample was determined by Volhard titration. After adding 50.00 mL of 0.04980 M AGNO3 and allowing the precipitate to form, the remaining silver was back titrated with 0.05322 M KSCN, requiring 22.76 mL to reach the end point. (MM of I = 126.904 g/mol) Reactions: Ag*+I"→ Agl Ag* + SCN¯ → Ag(SCN) Calculate the:
Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Chapter15: Equilibria Of Other Reaction Classes
Section: Chapter Questions
Problem 79E: In a titration of cyanide ion, 28.72 mL of 0.0100 M AgNO3 is added before precipitation begins. [The...
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