Limiting Reactants

Limiting Reactants

Essential Questions:

1. What does the amount of reactant have to do with the amount of product in a chemical reaction?

2. How can the limiting reactant be determined given only mole or gram amounts of a chemical reaction?

Multiple Choice

What type of reaction involves 2 substances combining to form 1 new compound?

• Decomposition Reaction

• Single Replacement Reaction

• Double Replacement Reaction

• Synthesis Reaction

Multiple Choice

What type of reaction involves the breaking down of a substance into simpler substances?

• Single Replacement Reaction

• Double Replacement Reaction

• Synthesis Reaction

• Decomposition Reaction

Multiple Choice

*Question from Yesterday!*

What is the largest number of moles of Al₂O₃ that

could result from reacting 6 moles of O2?

4 Al (s) + 3 O₂ (g) → 2 Al₂O₃ (s)

• 2 mol

• 6 mol

• 4 mol

• 1 mol

Open Ended

What's your good thing for today OR one thing you're grateful for?

Please don't type N/A and don't forget to type your name after your entry!

Multiple Choice

In the following reaction, which reactant will run out of first?

• H₂

• Cl₂

Open Ended

How would you describe what a limiting reactant is in your own words?

Open Ended

Based on what you understand about limiting reactants, when would a reaction stop?

Fill in the Blanks

In this example,

is the limiting reagent.

Multiple Choice

When 33 L of nitrogen gas react with 12 grams of

hydrogen gas to make ammonia @STP, the hydrogen

gas will be the excess reactant.

N₂(g) + 3H₂(g) → 2NH₃(g)

• True

• False

Multiple Choice

What is the limiting reactant if 10 moles of NH₃  react  with 30.0 moles of NO?
4NH₃+6NO --> 5N₂ + 6H₂O

• NH₃
• NO
• N₂
• water

Multiple Choice

Use the equation 2 Al + 3 Cl₂ ---> 2 AlCl₃.  If 2 moles of aluminum and 2 moles of chlorine are reacted, identify the limiting reactant.

• AlCl3
• Cl2
• Al