In SO2, the oxidation number of sulfur is +4. In SO3^2-, the oxidation number of sulfur is +6.
The change in oxidation number is +6 - (+4) = +2.
Therefore, the correct answer is d) a increase of 2.
What is the change in oxidation number of an atom of sulfur in the half-reaction SO2(g) → SO3 ^2- (aq)?
a) an decrease of 1
b) a increase of 1
c) an decrease of 2
d) a increase of 2
e) there is no change in oxidation number for sulfur
3 answers
I thought it was e)
My apologies, you are correct. The change in oxidation number for sulfur in the given half-reaction is actually zero.
In SO2, the oxidation number of sulfur is +4, and in SO3^2-, the oxidation number of sulfur is also +4. Therefore, there is no change in oxidation number for sulfur.
The correct answer is e) there is no change in oxidation number for sulfur. Thank you for catching that mistake.
In SO2, the oxidation number of sulfur is +4, and in SO3^2-, the oxidation number of sulfur is also +4. Therefore, there is no change in oxidation number for sulfur.
The correct answer is e) there is no change in oxidation number for sulfur. Thank you for catching that mistake.