1.What Mass of the Unknown Compound Is Formed in the Following Reactions?

Worksheet-4 09/22/13 SI Leader: Edward

1.What mass of the unknown compound is formed in the following reactions?

a) C2H4 + H2 C2H6 3.4g C2H4 reacts to produce x g C2H6

b) PCl3 + 3H2H3PO3+3HCl

3.1 mg PCl3 reacts to produce x mg HCl

c) B2H6 + 3O2B2O3+3H2O 4.6 Kg B2H6 reacts to produce x kg B2O3

2. For the following reactions, determine the value of x. a) CS2+3O2CO2+2SO2 1.8 mol CS2 yield x mol SO2

b) N2H4+3O22NO2+2H2O 7.3 mol O2 yield x mol NO2

c) SiH4+2O2SiO2+2H2O

-3 1.3 × 10 mol SiH4 yield x mol H2O 3. Phosgene is a highly toxic gas that has been used as a chemical weapon at times in the past. It is now used in the manufacture of polycarbonates, which are used to make compact discs and plastic eyeglass lenses. Phosgene is produced by the reaction CO+Cl2COCl2. Given an excess of carbon monoxide, what mass of chlorine gas must be reacted to form 4.5 g of phosgene?

4. If 8.4 moles of disilane, Si2H6 is combined with 15.1 moles of O2, Which is the limiting reactant:

____Si2H6+____O2____SiO2+____H2O

5.Silicon carbide, an abrasive, is made by the reaction of silicon dioxide with graphite (solid carbon)

SiO2+CSiC+CO We mix 150.0g of SiO2 and 101.5 g of C. If the reaction proceeds as far as possible, which reactant is left over? How much of this reactant remains?