William C. answered 09/13/23
Experienced Tutor Specializing in Chemistry, Math, and Physics
KNO2 and H2O look like the products of an acid base neutralization reaction.
In that case the reactants would be HNO2 and KOH, and the balanced equation is
HNO2(aq) + KOH(aq) -—> KNO2(aq) + H2O(l)