Question

Dentify the oxidation state of Cl in the following compounds: (3 points)

A. Cl2 - 0




B. HCl -1




C. ClO3–

What would C be?

Answer 1

A. An element in its pure state is always 0.

B. One of the oxidation rules is that H with a nonmetal (which is Cl) is always +1. Cl would be -2 because -2 + (+1) equals -1.

C. Oxygen is always -2, so Cl- would have to be -1 to equal -3.

It has been awhile since I learnt this in AP Chem so answers could be a little rusty. Hopefully it helps.