Example questions for the critical item 10.

Critical item 10:

1.
For the following reaction:
                S8  +  24Cl2  -->  8SCl6
52.0 L of Cl2 at STP is reacted with enough sulfur and the conditions are returned to STP.  How many liters of SCl6 at STP are produced?
                                                                                                                                                                                          answer
 

2.
10.0 quarts of nitrogen is contained in a flexible container at STP.  This is reacted with hydrogen at an elevated temperature to yield ammonia according to the reaction:
                                        N2  +  3H2   -->  2NH3
During the course of the reaction, the temperature is raised to 500oC but the pressure is maintained at 1.00 atm.  What is the resultant volume of the ammonia?
                                                                                                                                                                                        answer
 

3
A 50.0 L cylinder has methane gas (CH4) stored at 50oC and 4.5 atm.  This gas was burned according to the reaction:
                     CH4  +  O2  -->  CO2  +  2H2O
How many grams of H2O are produced?
                                                                                                                                                                                       answer
 
 
 
 

1 ANS = 17.3 L
 
  



 
 
 
  






2 ANS = 56.6 qt.       STP means 1 atm pressure and 0oC
  








 

3 ANS = 153 g