A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 4 years ago
In the reaction
Cu+HNO3 →Cu2+ +NO2 +H2O
Deduce the oxidation state of all the elements on both the reactant and the product side.
anonymous
 4 years ago
In the reaction Cu+HNO3 →Cu2+ +NO2 +H2O Deduce the oxidation state of all the elements on both the reactant and the product side.

This Question is Closed

Xishem
 4 years ago
Best ResponseYou've already chosen the best response.0LHS: Cu: 0 H: +1 O: 2 N: +5 RHS: Cu: 0 N: +4 O: 2 H: +1 O: 2

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Rules for deciding oxidation number. Anything in elemental state is 0 (eg., Cu or Na or O2) All alkali metals(Na,K,Li,Rb) in any compunds are +1. eg, NaCl. Oxygen is always 2.(except O2 and O3). Hydrogen is always +1. All other elements areobtained by balancing oxidation number and charge If you apply these rules Cu is in elemental state on the left hence it is 0. H is always +1 and O is 2. In HNO3 net charge is 0. Hence sum of all oxidation numbers is0.If N has oxidation number x So 12*3+x=0 x=5. Hence N=5. Now Cu in Cu2+ is obviously +2. In NO2 O is 2 and net charge is 0. So x2*2=0 x=4.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0which reactant was oxidised and which was reduced?

Xishem
 4 years ago
Best ResponseYou've already chosen the best response.0When a reactant is oxidized, it means that it raises in oxidation number. By this... Cu was oxidized. N was reduced.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0thank you, ive never done chemistry before so it's taking awhile to all make sense

Xishem
 4 years ago
Best ResponseYou've already chosen the best response.0Be sure you realize I wrote the oxidation for Cu(2+) wrong in my post. I didn't see the plus sign in your original equation. As shankvee pointed out, its oxidation number is actually +2.
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.