Prelab
Help
2. NH4+
→H+ and what ?
3a. For the
Lewis structure the N is in the center and you will have 7 pairs of electrons
to work with. All single bonds with one pair of lone pair.
b.
this
is the structural formula with the chloride ion attached . Draw the Lewis
structure just for the hydroxyl ammonium ion only. Remember what the positive
will do to the number of valence electrons.
c. NH3OH+ + H2O → name
the products
4. Just
by looking at the equation of problem 2 you can tell what is being produced to
determine its acidity. Remember that Cl- is a weak
ion and remains a spectator and does not get involved. Therefore NH4+
is the major species. Problem #4 on the
other hand is producing what, to determine if its
acidic or basic. Again the Cl- ion does
not get involved.
5a. The reaction is
CaCl2 + NaCO3 → 2NaCl and CaCO3
Using
the molarity equation calculate the moles needed of
sodium carbonate than the volume of calcium carbonate.
b. The
reaction is
2HCl + CaCO3 →
Ca(HCO3)2 + Cl2