In the following oxidation-reduction chemical reaction which chemical species is getting reduced? Hint: Oxygen oxidation number is -2 in Cr20,2- (ag) and -1 in H2O2(aq) and O in O2(g). Hydrogen oxidation number is +1. 02(6) + Cr3+ * (aq) → H2O2(aq) + Cr20,2 (aq) Cr3+ and Cr20,2- H2O2 and Cr2072- Cr3+ and H2O2 none of them O2 and Cr3+ O2 and H202
In the following oxidation-reduction chemical reaction which chemical species is getting reduced? Hint: Oxygen oxidation number is -2 in Cr20,2- (ag) and -1 in H2O2(aq) and O in O2(g). Hydrogen oxidation number is +1. 02(6) + Cr3+ * (aq) → H2O2(aq) + Cr20,2 (aq) Cr3+ and Cr20,2- H2O2 and Cr2072- Cr3+ and H2O2 none of them O2 and Cr3+ O2 and H202
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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I hope you can answer both of the questions.
Transcribed Image Text:In the following oxidation-reduction chemical reaction which chemical species is
getting reduced? Hint: Oxygen oxidation number is -2 in Cr20,2 (ag) and -1 in
H2O2(ag) and 0 in O2(g). Hydrogen oxidation number is +1.
O2(g)
+ Cro* (aq)
H2O2(aq) + Cr2O,²" (aq)
Cr3+ and Cr20,2-
H2O2 and Cr2072-
Cr3+ and H2O2
none of them
O2 and Cr3+
O2 and H202
Transcribed Image Text:Balance the following oxidation-reduction in acidic solution. Hint: Oxygen oxidation
number is -2 in Cr2072 (ag) and -1 in H2O2(ag) and O in O2(g). Hydrogen oxidation
number is +1.
O26) + Cr3+
(aq)
H2O2(aq) + Cr207² (aq)
4Cr3+
(aq)
+ 502(g) + 5H20 →
2Cr20,2 (aq) + 4H2O2(aq) + 9H*
3Cr3+
+ 402(g) + 6H20 →
Cr20,2 (aq) + 3H2O2(aq) + 8H*
(aq)
4Cr3+
(aq) + 402(g) + 6H20 →
2Cr2072 (aq) + 4H2O2(aq) + 9H*
O 2Cr3+
+ 302(g) + 7H2O →
Cr207 (aq)
+ 3H202(ag) + 8H*
(aq)
4Crs* (ag) + 502(g) + 6H20 →
2Cr2072 (ag) + 4H2O2(ag) + 9H*
3Cr3+
(aq)
+ 402(g) + 6H20 →
2Cr20,7"(aq)
+ 4H202(ag) + 8H*
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