## Finding Charge

Victoria Luu - 1C
Posts: 60
Joined: Fri Sep 28, 2018 12:15 am

### Finding Charge

How exactly do you find the charge of a reactant if the charge is not given?

Alexa Tabakian 1A
Posts: 38
Joined: Fri Sep 28, 2018 12:20 am

### Re: Finding Charge

Use the charges from the periodic table! Hope this helps!

A De Castro 14B 2H
Posts: 75
Joined: Fri Sep 28, 2018 12:29 am

### Re: Finding Charge

If by "charge is not given," you mean that the molecule has a neutral charge, then the charge would be 0. For example, H2O is a neutral molecule; it has a net charge of 0. Based on the charges from the periodic table, oxygen usually has a 2- charge while hydrogen usually has a + charge.
2H+ + O2- → H2O, so (2 x +1) + -2 = 0.

Albert_Luu3K
Posts: 62
Joined: Fri Sep 28, 2018 12:23 am

### Re: Finding Charge

Usually if the charge is not given, that means the molecule is a neutral charge (0). Using that knowledge, you should be able to use the periodic table to find the oxidation state of one of the elements and deduct the oxidation state of the other.