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Stoichiometry of Reactions, Part III: Limiting Reactants

Stoichiometry of Reactions, Part III: Limiting Reactants

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Author: Jack Richens
Description:

Following this lesson the student should be able to:

  • #next_pages_container { width: 5px; hight: 5px; position: absolute; top: -100px; left: -100px; z-index: 2147483647 !important; } Define limiting reactant.
  • Differentiate between limiting and excess reactants in a chemical reaction.
  • Identify the limiting reactant in a chemical reaction.
  • Calculate the amount of product that will theoretically result from a chemical reaction.
  • Calculate the amount of excess reactant that will remain after the reaction has gone to completion.
 

This lesson will begin with a review of prevous concepts that will be essential to understanding limiting reactants including: coversion between mass and moles, and the concept of mole ratios and their use. It then introduces the concept of a limiting reactant and leads the viewer through two examples of how the limiting reactant is identified. The viewer is provided with another problem for them to work independently before the solution is worked through. Finally, a review of the material introduced in the video is presented.

 
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Tutorial

  ↵This lesson will begin with a review of prevous concepts that will be essential to understanding limiting reactants including: coversion between mass and moles, and the concept of mole ratios and their use. It then introduces the concept of a limiting reactant and leads the viewer through two examples of how the limiting reactant is identified. The viewer is provided with another problem for them to work independently before the solution is worked through. Finally, a review of the material introduced in the video is presented.

#next_pages_container { width: 5px; hight: 5px; position: absolute; top: -100px; left: -100px; z-index: 2147483647 !important; } #next_pages_container { width: 5px; hight: 5px; position: absolute; top: -100px; left: -100px; z-index: 2147483647 !importan #next_pages_container { width: 5px; hight: 5px; position: absolute; top: -100px; left: -100px; z-index: 2147483647 !important; }

Source: Jack W Richens, Jr.

Stoichiometry of Reactions, Part III: Limiting Reactants Video Lesson

This video lesson introduces the concept of limiting reactants and how to determine which of the reactants in a particular chemical reaction will act as the limiting reactant. The calculations of the mass of product produced, as well as the mass of excess reactants, is also covered.

Source: Jack W Richens, Jr

Attempt this problem before our next class…

If 35.0 g of iron (III) oxide and 10.0 g of aluminum metal react in a thermite reaction,

text Fe end text subscript 2 text O end text subscript 3 text  + 2 Al → Al end text subscript 2 text O end text subscript 3 text  + 2 Fe end text.

  • Which is the limiting reactant?
  • How many grams of iron metal will be produced?
  • How many grams of the excess reactant will remain?
 

Source: Jack W Richens, Jr.