9b 9. The % w/w of I- in a 0.2144-g sample was determined by Volhardtitration. After adding 50.00 mL of 0.04980 M AGNO3 and allowing theprecipitate to form, the remaining silver was back titrated with 0.05322 MKSCN, requiring 22.76 mL to reach the end point. (MM of I = 126.904g/mol)Reactions:Ag* +I-→ AglAg* + SCN" → Ag(SCN)Calculate the: b. Mass of I- in the sample.O 0.1438 gO 0.1722 gO 0.1623 gO 0.1939 gO 0.1840 g

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Answered: b. Mass of I- in the sample. O 0.1438 g…

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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

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter17: Complexation And Precipitation Reactions And Titrations

Section: Chapter Questions

Problem 17.23QAP

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.

Question

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

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