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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Question
9b
![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:](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F673d36b2-1c43-4cea-a267-cc250999317d%2F606f3b8a-8c05-4b0d-9803-84119dcb2e9d%2Fydi31md_processed.png&w=3840&q=75)
Transcribed Image Text: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:
![b. Mass of I- in the sample.
O 0.1438 g
O 0.1722 g
O 0.1623 g
O 0.1939 g
O 0.1840 g](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F673d36b2-1c43-4cea-a267-cc250999317d%2F606f3b8a-8c05-4b0d-9803-84119dcb2e9d%2Fivjk6zj_processed.png&w=3840&q=75)
Transcribed Image Text:b. Mass of I- in the sample.
O 0.1438 g
O 0.1722 g
O 0.1623 g
O 0.1939 g
O 0.1840 g
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