Title: More Limiting Reagent Sample Problems
Course: Stoichiometry

Test Your Witts!!

The following are more example problems for you to work through. Try the problem, then watch the video for the solution. This is a good chance to see how others approach limiting reagent problems.

Problem #1:

4 NH_3 + 5 O_2 ----> 4 NO + 6 H_2O

If 34 g of NH_3 are reacted with 32 g of O_2, how many g of NO are produced?

Problem #4:

P_4 reacts with oxygen gas to produce diphosphorus pentoxide. If 8.00 g of P_4 is reacted with 8.00 g of oxygen gas, how many grams of diphosphorus pentoxide are formed?

(Note the one minor error that the video makes while working the problem around the 4:21 mark....he should have used a 2:5 ratio. This final answer is still correct!)

Problem 5:

Al + Br_2 ------> Al_2Br_6

If 3 mol of aluminum is reacted with 3 mol of bromine, which one is the limiting reagent?

(Note: The video does not get to this problem until the 6:19 mark. However, the beginning of this video is an excellent review of limiting reagent concepts.)