Test Instructions

There will be 10 questions below on finding the limiting reagent. If you get all 10 of these questions correctly, you are allowed to move onto the next subject, using limiting reagents. If you get any of the questions wrong, you must identify why you got them wrong, and you must redo the problems and get 10 out of 10. 

Test Questions

1. For the balanced equation shown below, what would be the limiting reagent if 58.1 grams of SO2 were reacted with 27.9 grams of O2?
2SO2+O2=>2SO3

Which is the limiting reagent? SO2 or O2


2.For the balanced equation shown below, what would be the limiting reagent if 89.9 grams of NH3 were reacted with 332 grams of O2?
4NH3+5O2=>4NO+6H2O

Which is the limiting reagent? NH3 or O2


3.For the balanced equation shown below, what would be the limiting reagent if 27.3 grams of C2H4Cl2 were reacted with 34.6 grams of O2?
2C2H4Cl2+5O2=>4CO2+2H2O+4HCl


Which is the limiting reagent? C2H4Cl2 or O2 


4. For the balanced equation shown below, what would be the limiting reagent if 50.0 grams of C2H4O2 were reacted with 67.7 grams of O2?
C2H4O2+2O2=>2CO2+2H2O

Which is the limiting reagent? C2H4O2 or O2


5.For the balanced equation shown below, what would be the limiting reagent if 53.1 grams of K2O were reacted with 6.22 grams of H2O?
K2O+H2O=>2KOH


Which is the limiting reagent? K2O or H2O

6. For the balanced equation shown below, what would be the limiting reagent if 60.8 grams of Fe were reacted with 38.4 grams of H2O?
3Fe+4H2O=>Fe3O4+4H2

Which is the limiting reagent? Fe or H2O

7.For the balanced equation shown below, what would be the limiting reagent if 80.2 grams of Al were reacted with 310 grams of Cr2O3?
2Al+Cr2O3=>Al2O3+2Cr


Which is the limiting reagent? Al or Cr2O3

8.For the balanced equation shown below, what would be the limiting reagent if 98.4 grams of C2H3F were reacted with 85.1 grams of O2?
4C2H3F+7O2=>8CO+6H2O+2F2


Which is the limiting reagent? C2H3F or O2

9. For the balanced equation shown below, what would be the limiting reagent if 87.6 grams of C2H3Cl were reacted with 138 grams of O2?
4C2H3Cl+7O2=>8CO+6H2O+2Cl2

Which is the limiting reagent? C2H3Cl or O2


10. For the balanced equation shown below, what would be the limiting reagent if 62.0 grams of C5H5N were reacted with 271 grams of O2?
4C5H5N+29O2=>20CO2+10H2O+4NO2

Which is the limiting reagent? C5H5N or O2

Test Question Answers

1. O2 or SO2 
 





2. NH3 or O2 


 




3. C2H4Cl2  or O2 


 

 

4. O2 or C2H4O2  


 



 

5. K2O or H2O  



 



6. Fe or H2O 



 

7. Al  or Cr2O3 


 



8. C2H3F or O2 



 



9. C2H3Cl  or O2 


 



10. C5H5N  or O2