A 3650-mg sample containing bromate and bromide was dissolved in sufficient water to give 250.0 mL. After acidification, silver nitrate was added to a 25.00 mL aliquot where the resulting precipitate was filtered, washed and then redissolved in an ammoniacal solution of potassium tetracyanonickelate(II) according to the reaction: Ni(CN), + 2 AgBr) → 2 Ag(CN), + Ni? + 2 Br The liberated nickel ion required 26.73 mL of 0.02089 M EDTA. The bromate ion in a 10.00 mL aliquot was reduced to bromide with As*" prior to the addition of silver nitrate. The same procedure was followed and the released nickel ion was titrated with 21.94 mL of the EDTA solution. Calculate the percentage of impurity in the sample. Br (79.904) a. 24.45% b.34.38% c. 41.17% d. 65.62%
A 3650-mg sample containing bromate and bromide was dissolved in sufficient water to give 250.0 mL. After acidification, silver nitrate was added to a 25.00 mL aliquot where the resulting precipitate was filtered, washed and then redissolved in an ammoniacal solution of potassium tetracyanonickelate(II) according to the reaction: Ni(CN), + 2 AgBr) → 2 Ag(CN), + Ni? + 2 Br The liberated nickel ion required 26.73 mL of 0.02089 M EDTA. The bromate ion in a 10.00 mL aliquot was reduced to bromide with As*" prior to the addition of silver nitrate. The same procedure was followed and the released nickel ion was titrated with 21.94 mL of the EDTA solution. Calculate the percentage of impurity in the sample. Br (79.904) a. 24.45% b.34.38% c. 41.17% d. 65.62%
Chemistry by OpenStax (2015-05-04)
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Chapter19: Transition Metals And Coordination Chemistry
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Problem 11E: Iron (II) can be oxidized to iron (III) by dichromate ion, which is reduced to chromium (III) in...
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![A 3650-mg sample containing bromate and bromide was dissolved in sufficient water to give 250.0
mL. After acidification, silver nitrate was added to a 25.00 mL aliquot where the resulting precipitate
was filtered, washed and then redissolved in an ammoniacal solution of potassium
tetracyanonickelate(II) according to the reaction:
Ni(CN), + 2 AgBr) → 2 Ag(CN), + Ni? + 2 Br
The liberated nickel ion required 26.73 mL of 0.02089 M EDTA. The bromate ion in a 10.00 mL
aliquot was reduced to bromide with As* prior to the addition of silver nitrate. The same procedure
was followed and the released nickel ion was titrated with 21.94 mL of the EDTA solution. Calculate
the percentage of impurity in the sample. Br (79.904)
a. 24.45%
b.34.38%
c. 41.17%
d. 65.62%](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F594aa9dd-024b-4dc7-b646-b89d6ecec822%2F1109f0f0-db11-46aa-95da-401414f1a5bd%2F7hzljsy_processed.png&w=3840&q=75)
Transcribed Image Text:A 3650-mg sample containing bromate and bromide was dissolved in sufficient water to give 250.0
mL. After acidification, silver nitrate was added to a 25.00 mL aliquot where the resulting precipitate
was filtered, washed and then redissolved in an ammoniacal solution of potassium
tetracyanonickelate(II) according to the reaction:
Ni(CN), + 2 AgBr) → 2 Ag(CN), + Ni? + 2 Br
The liberated nickel ion required 26.73 mL of 0.02089 M EDTA. The bromate ion in a 10.00 mL
aliquot was reduced to bromide with As* prior to the addition of silver nitrate. The same procedure
was followed and the released nickel ion was titrated with 21.94 mL of the EDTA solution. Calculate
the percentage of impurity in the sample. Br (79.904)
a. 24.45%
b.34.38%
c. 41.17%
d. 65.62%
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