3rd hour
Wednesday, March 05, 2014
9:43 AM
Pre-lab discussion:
The reaction between solid white phosphorus (P4) and oxygen produces
solid tetraphosphorus decoxide. Write the balanced equation for this
reaction.
Determine the mass of tetraphosphorus decoxide formed if 25.0 g P4 and
50.0 g oxygen are combined.
What is the limiting reactant?
What mass of the excess reactant remains (unused) after the reaction
stops?
LimRxt2 Page 1
LimRxt2 Page 2
4th hour
Wednesday, March 05, 2014
9:43 AM
The reaction between solid sodium and iron (III) oxide is one in a series
of reactions that inflates an automobile airbag:
___ Na (s) + ___ Fe2O3 (s) → ___ Na2O (s) + ___ Fe (s)
If 100.0 g of Na and 100.0 g of Fe2O3 are used in the reaction, determine
the following:
a. Limiting reactant?
a. Excess reactant?
a. Mass of solid iron produced?
a. Mass of excess reactant used?
a. Mass of excess reactant remaining (unused)?
LimRxt2 Page 3
Actual Yield:
Percent Yield:
LimRxt2 Page 4