balance the redox reaction

NO2^- + Ag^+ = NO3^- + Ag

3 answers

Ag^+ + e ==> Ag
H2O+ NO2^- ==> NO3^- + 2e + 2H^+

Multiply equation 1 by 2 and equation 2 by 1 then add the two for the complete equation.
wouldnt h2o be on the other side because you orignally have 2h20 on the products and one h20 in the reactants so cancelling them out would make one h20 on the products side
sorry this is in basic solution