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Limiting Reactant Practice

Authored by Rondel Thorpe

Chemistry

9th Grade - University

NGSS covered

Used 49+ times

Limiting Reactant Practice
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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

The limiting reactant

slows the reaction down
is used up first
is the reactant that is left over
controls the speed of the reaction

2.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

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

Tags

NGSS.HS-PS1-7

3.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

When does a chemical reaction stop?

When the lab is finished
When the excess reactant is used up
When the limiting reactant is used up
Chemical reactions never stop

Tags

NGSS.HS-PS1-6

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

When 12 moles of O2 reacts with 1.1 mole of C10H8 what is the limiting reactant?  C10H8 + 12 O2 --> 10 CO2 + 4 H2O

Oxygen
C10H8
Water
Carbon Dioxide

Tags

NGSS.HS-PS1-7

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

4NH3 + 5O2 --> 4NO + 6H2O
How many grams of NO are formed if 6.30g of ammonia react with 1.80g of oxygen? 

0.37g
0.045g
1.35g
11.1g

Tags

NGSS.HS-PS1-7

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

P4 + 6Cl2 --> 4PCl3 
The reaction of 75.0g P4 with excess chlorine gas produces 110g PCl3 in lab. Find the theoretical yield and calculate percent yield for the reaction. 

78%
64%
27%
33%

Tags

NGSS.HS-PS1-7

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

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

Tags

NGSS.HS-PS1-7

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