# Redox Equation Help

1. Mar 6, 2005

### vsage

This is the 2nd problem on a HW sheet I have. I don't have any particular problems with it but I'm just making sure I'm doing these right:

Complete (add H20, H+ or OH- as appropriate) and balance the following equations. Show all half reactions.

a. $$NO_3^- + Ag \rightarrow Ag^+ + NO_2$$ (acidic)
Half reactions I found to be:
-$$Ag\rightarrow Ag^+ + e^-$$
-$$e^- + NO_3^- + 2H^+ \rightarrow NO_2 + H_2O$$

making the balanced reaction

$$2H^+ + NO_3^- + Ag \rightarrow Ag^+ + NO_2 + H_2O$$

Any thoughts? I'm pretty iffy on redox equations. Thanks

2. Mar 6, 2005