20 mL of a mixture of ferrous sulfate (FeSO4) and ferric sulfate Fe₂(SO4)3 was titrated with 6.5 mL of 0.01 M permanganate. Another 20 mL of sample after complete reduction with metallic zinc consumed 13.7 mL of said permanganate -Indicate the mass in grams of the ferric ion (Fe3+) in the sample.
20 mL of a mixture of ferrous sulfate (FeSO4) and ferric sulfate Fe₂(SO4)3 was titrated with 6.5 mL of 0.01 M permanganate. Another 20 mL of sample after complete reduction with metallic zinc consumed 13.7 mL of said permanganate -Indicate the mass in grams of the ferric ion (Fe3+) in the sample.
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter4: Stoichiometry: Quantitative Information About Chemical Reactions
Section4.9: Spectrophotometry
Problem 2.1ACP: Excess KI is added to a 100.0-mL sample of a soft drink that had been contaminated with bleach,...
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Transcribed Image Text:2KMnO4 + 8H₂SO4 + 10FeSO4 → K₂SO4 + 5Fe₂(SO4)3 + 2MnSO4 + 8H₂O
20 mL of a mixture of ferrous sulfate (FeSO4) and ferric sulfate Fe₂(SO4)3 was titrated
with 6.5 mL of 0.01 M permanganate. Another 20 mL of sample after complete reduction
with metallic zinc consumed 13.7 mL of said permanganate
-Indicate the mass in grams of the ferric ion (Fe3+) in the sample.
0.0036
0.0007
0.0383
0.0015
0.0077
0.0201
0.0008
0.0040
0.0182
Otro:
Indicate the mass in grams of ferric sulfate Fe2(SO4)3 in the sample.
0.0029
0.0144
0.0494
0.0274
0.0020
0.0720
0.0099
0.1370
O 0.0055
Otro:
-Assuming that the total mass of the sample is 0.121. Calculate the % m/m of ferric sulfate
Fe2(SO4)3 in the sample.
40.7
59.3
25.9
74.1
O Otro:
-Calculate the % m/v of ferric sulfate Fe2(SO4)3 in the sample.
0.07
0.05
0.25
0.36
0.68
O 0.03
O 0.01
O 0.14
O otro:
ΟΟΟ
ΟΟΟΟΟ
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