How to Balance, what type of reaction Ag(s) + O2(g) => Ag2O(s)?
High school chemistry
- caroline mLv 69 years agoFavorite Answer
Ag(s) + O2(g) --> Ag2O is a synthesis reaction
how many Ag atoms are in the products? 2, so we have to have 2 in the reactants, place a 2 before the Ag on the reactant side
how many O atoms are in the products? 1, so we need 1 in the reactants. since we have 2 oxygen atoms in the reactants, how can we make 2 oxygens 1? by placing a 1/2 in front of the O2. BUT since we cannot have fractions of molecules, we must multiply the entire equation by 2
2Ag + 1/2 O2 --> Ag2O
becomes 4Ag + O2 + 2Ag2O
to simplify this, Ag + O2 -> Ag2O
how many oxygens are in the reactants? 2, so we need to place a 2 in front of the Ag2O. this will give us 4 Ag atoms in the products and only 1 in the reactants, place a 4 in front of the Ag(s) and the equation is balanced. this was an easy one. the way i teach this is to always balance single elements last. but, in this case, we have Ag and O2 which are single elements. so it really doesn't matter.
- Anonymous4 years ago
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