1. The problem statement, all variables and given/known data The redox reaction below occurs in basic solution. Balance it with the smallest whole number coefficients and determine the coefficient for OH-. H2CO(g) + Ag+(aq) ---> HCOOH(aq) + Ag(s). 2. Relevant equations 3. The attempt at a solution I got the oxidation numbers and found that Ag is reduced and the H2CO is oxidized, but I cant balance the half reactions, this is what I came up with: Ag+ + 1e- ---> Ag H2CO + H2O ---> 2HCOOH + 1e- + H2O Any help?