Multiple Choice
What is the oxidation number of copper in CuSO_4?
35
views
6. Chemical Quantities & Aqueous Reactions
Calculate Oxidation Numbers
Struggling with General Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
What is the oxidation number of the carbon atom in carbon monoxide (CO)?
A
0
B
+2
C
-2
D
+4
Verified step by step guidance1
Recall that the oxidation number of an element in a compound is a hypothetical charge that an atom would have if all bonds were considered ionic.
Assign the oxidation number of oxygen as -2, which is its common oxidation state in most compounds except peroxides and a few others.
Let the oxidation number of carbon be x. Since carbon monoxide (CO) is a neutral molecule, the sum of the oxidation numbers must be zero.
Write the equation for the sum of oxidation numbers: \(x + (-2) = 0\).
Solve the equation for x to find the oxidation number of carbon: \(x = +2\).
Related Videos
Related Practice
Calculate Oxidation Numbers practice set
Problem sets built by lead tutorsExpert video explanations