Question

You are assigned the following amount of CoCl2.

Volume of CoCl2 assigned and used 4.84 mL
Concentration of CoCl2 1.39 M

To this is added...

Mass of charcoal 0.23 g
Volume of 15.0 M ammonia 5.3 mL
Mass of ammonium chloride 1.38 g

The ammonium chloride was dissolved. The mixture was cooled. To this was added:

Volume of 10% (by weight) hydrogen peroxide 4.9 mL
(density = 1.00 g/mL)

Calculate:

Millimoles of CoCl2 used ____6.7276___________ mmol
b) Millimoles of NH3 theoretically required _______________ mmol
c) Millimoles of NH3 actually added _______________ mmol
d) Millimoles of NH4Cl theoretically required _______________ mmol
e) Millimoles of NH4Cl actually added _______________ mmol
f) Millimoles of H2O2 theoretically required _______________ mmol
g) Millimoles of H2O2 actually added:14.41mml