Name ____________________	
Chemistry 101      Lab Quiz 2     Nov. 12, 1998       Dr. B. Jackson

1. _________ What is the AXE notation for the compound, ClO3- ?




2. _________ What is the molecular geometry of a compound with the AXE notation of AX3E0 ?


3. _________ Which of the following would have the same molecular shape as
BI3?
          (SbCl3    BrF3     AlCl3 )

4 - 6 Use the following information.
     Na2CO3    +   2 HCl     -------->   2 NaCl   +    H2O     +  CO2

     0.50 grams of sodium carbonate was reacted with excess hydrochloric acid.  When the reaction
     was completed, there were 0.45 grams of sodium chloride.

4. __________ What was the gas given off   in this experiment?


5. __________ What was the theoretical yield of sodium chloride?


6. __________ What was the percent yield of sodium chloride?  



7 - 9     Use the following information.

     0.546 grams of a hydrate was heated vigorously, cooled and reweighed.  It now weighed     0.330.    The molecular weight of the anhydrous salt was 110.

7. ___________ How many moles of anhydrous salt were present?

8. ___________ How many moles of water were present?

9. ___________ The formula for the hydrate is   SALT * _______H2O.  Write the coefficient for
                    the water.

10. __________ Freebie