Turn on thread page Beta
 You are Here: Home

# Oxidation Number Question watch

1. What is the oxidation number of Nitrogen in Copper Nitrate , Cu(NO3)2 .

I'm thinking that the Oxygen will be (-2*-3)*2 = -12
But I'm not sure what Cu is to know what the state of Nitrogen will be ?
2. (Original post by Tulian)
What is the oxidation number of Nitrogen in Copper Nitrate , Cu(NO3)2 .

I'm thinking that the Oxygen will be (-2*-3)*2 = -12
But I'm not sure what Cu is to know what the state of Nitrogen will be ?
when copper forms bonds it has a oxidation number of +2, NO3 has an overall oxidation number of -1. Therefore oxidation number for nitrogen is +5

3. Oh and copper sometimes has an oxidation number of +1 but that is really unstable, unless made into a solid
4. Thanks

So Cu(NO3)2

Cu has 2+ , N03 will have -1 altogether, and that is twice so -2.

The N03 bracket has to equal -2, so the oxygen will make it -12, Nitrogen will be 5 because when its doubled it'll be 10 ? So 2 +10-12=0 ?
5. correct,

nitrogen is +5 since NO3 has an overall oxidation number of -1.
yes altogether Cu(NO3)2 has overall charge of 0
0= -12( -2*3=6*2 )
N= +10 (5 *2 )
AND Cu is +2

-12+10+2= overall charge is 0

REMEMBER THE oxidation numbers originally are Cu= +2 , N= +5, and O= -2 ( above you jus times it to get to the overall charge 0) practise some more q's on doc brown chemistry .. I hope that helps
6. (Original post by Tulian)
What is the oxidation number of Nitrogen in Copper Nitrate , Cu(NO3)2 .

I'm thinking that the Oxygen will be (-2*-3)*2 = -12
But I'm not sure what Cu is to know what the state of Nitrogen will be ?
Cu is 2+, so NO3 is -1
O is -2, so overall oxidation state of -1,
-1 - (3 x -2) = +5
N is +5 !

I know the question was already answered, just wanted to contribute

Turn on thread page Beta

### Related university courses

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: March 27, 2011
Today on TSR

### He lied about his age

Thought he was 19... really he's 14

### University open days

1. University of Bradford
Wed, 25 Jul '18
2. University of Buckingham
Psychology Taster Tutorial Undergraduate
Wed, 25 Jul '18
3. Bournemouth University
Clearing Campus Visit Undergraduate
Wed, 1 Aug '18
Poll

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE