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Electrochemistry: Oxidation State

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Wize University Chemistry Textbook > Chemical Reactions

Oxidation States

5 Activities

What is the oxidation state for the following: (enter answer as -1 or +2 for example)
P in P2O5:

Cr in Na2Cr2O7:

Al in Al2(SO4)3:

Na in Na2O2:

O in Na2O2:

N in NH3:


Note: If you're ever unsure of which element should have a + or - oxidation #, then think of which is more EN.
In our last example, was N or H more EN?
So if that is the case, do you think N would be more willing to gain or lose electrons?
And if that is the case, would N have a - or + oxidation state?
More Oxidation States Questions:
Practice: Lewis Structure: Formal Charge
Practice: Lewis Structure: Formal Charge
Calculate the formal charge of B in BH4⊝BH_4^{\circleddash }
Resonance Structure, Oxidation State
Choose the correct statement:
Electrochemistry: Oxidation state
What is the oxidation state of Br in BrO3- ?
Lewis Structure: Formal Charge
Calculate the formal charge of B in BH4⊝BH_4^{\circleddash }
Lewis dot structure
Consider the following structure and choose the correct statement:
Oxidation state
In which compound does carbon have an average oxidation state of −2?
Ionic Bonds
For the following pairs of atoms, determine the ion that will form for each and the resulting chemical formula of the ionic compound.
a) K, O
b) Ca, Cl
Electrochemistry: Oxidation state
Determine the oxidation number of each element in each of the following compounds:
a. H2CO3
b. N2
Electrochemistry: Oxidation states
Give the unit formula of beryllium chloride.
Give the unit formula for aluminum nitrite.
Oxidation State Practice Questions
1) Determine the oxidation state for each atom in the following complexes.
a) Mg3P2
b) Na2(SO4)
Electrochemistry: Oxidation states
When potassium metal reacts with chlorine the product(s) is(are):
Electrochemistry: Oxidation States
When magnessium reacts with oxygen the product(s) is(are):
Electrochemistry: Oxidation States
The SO32- ion can be oxidized to the SO42- ion. What is the formal charge on the sulfur atoms for SO32- and SO42- in there most stable resonance structure?
Electrochemistry: Oxidation state
What is the oxidation state of Br in BrO3- ?