Example questions for the critical item 4.

Critical item 4:

1 How many grams of NaOH are required to produce 75.0 grams of Na2SO4 according to the following reaction equation:
    2NaOH +  H2SO4  -->  Na2SO4 +  2H2O
where H2SO4 is in excess.                                                answer
 

2 How many grams of SCl6 are produced from 35.0 grams of sulfur and an excess of Cl2 according to the reaction:
    S8  +  24Cl2  -->  8SCl6                                               answer
 

3
60 grams of iron react completely with sulfuric acid to yield Fe2(SO4)3.  How much Fe2(SO4)3 is produced?                                                    answer
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

1 ANS = 42.3 g
 
 
 
 
  


2 ANS = 268 g


 
 
 
 

3 ANS = 215 g