Multiple Choice
The reaction Cu(s) + 2 AgNO3(aq) → Cu(NO3)2(aq) + 2 Ag(s) is best classified as a(n):
6. Chemical Quantities & Aqueous Reactions
Redox Reactions
Struggling with General Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
In the reaction ZnO + C → Zn + CO, which element is oxidized?
A
Oxygen (O)
B
Zinc (Zn)
C
Carbon (C)
Verified step by step guidance1
Identify the oxidation states of each element in the reactants and products. In the reactants, Zn in ZnO has an oxidation state of +2, O has -2, and C in elemental form has an oxidation state of 0.
In the products, Zn is in elemental form with an oxidation state of 0, and CO has C with an oxidation state of +2 and O with -2.
Determine the change in oxidation states for each element. Zn goes from +2 in ZnO to 0 in Zn, indicating reduction. O remains at -2 in both ZnO and CO, indicating no change.
Carbon goes from an oxidation state of 0 in the reactant to +2 in CO, indicating oxidation.
Conclude that the element that is oxidized is the one whose oxidation state increases. Therefore, Carbon (C) is oxidized in this reaction.
1:53mWatch next
Master Oxidation and Reduction Reactions with a bite sized video explanation from Jules
Start learningRelated Videos
Related Practice
Redox Reactions practice set
Problem sets built by lead tutorsExpert video explanations