TOP TEN LIST - MOST
COMMON MISTAKES ON
NAME THAT REACTION
- Writing H(OH) (aq) as a product of the
reaction of an acid and base. Hopefully, you realized that this
product is H2O(l)
- Wriitng the incorrect molecular formula for
a product. For example aluminum nitrate was often written as
AlNO3, not correctly as Al(NO3)3.
To write this correctly, you need to know that NO3 has
a negative one charge, and from the formula for the reactants (as
in reaction 5 - in this case Al(OH)3), you should
surmise that Al ion has a charge of 3+.
- Not writing the simplest formula for a
product. Fox example, sodium nitrate is not
Na2(NO3)2, but rather
- Leaving off the (aq), (s), (l), or (g)
after the product. How can you or I tell if you have a
precipitation reaction if one of the products doesn't have an (s)
- Not balancing the equations.
- Not recognizing that if you have a strong
acid in the reactants and another reactant with OH, that the
reaction is an acid/base reaction
- Automatically assuming that if you have a
strong acid in the reactants that the reaction has to be an
acid/base reaction. This is only true if you have a base like OH
in the reactants.
- Assuming a reaction is a redox reaction
without determining the oxidation number for each atom. (Obviously
this is not necessary when the reaction is a combustion reaction
using molecular oxygen, O2.
- Not knowing the charge on ions.
- Not putting () around certain ions when
needed. For example iron hydroxide is Fe(OH)3 not