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Limiting Excess Reactants and Percent Yield

Authored by Charles Martinez

Chemistry

10th - 12th Grade

NGSS covered

Used 1+ times

Limiting Excess Reactants and Percent Yield
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11 questions

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1.

MULTIPLE CHOICE QUESTION

3 mins • 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

2.

MULTIPLE CHOICE QUESTION

5 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

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Theoretical yield = 73g
Actual yield = 62g
Calculate the percent yield.

1.16%
116%
85%
76%

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the measured amount of a product obtained from a chemical reaction?

mole ratio
theoretical yield
percentage yield
actual yield

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

4NH+ 5O--> 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

What is the percent yield if 0.856 g of NH3 is actually obtained in the lab during the following reaction:
4NH+ 5O--> 4NO + 6H2O
How many grams of NO are formed if 6.30g of ammonia react with 1.80g of oxygen? 

63.4%
53.5%
89.4%
20.1 %

Tags

NGSS.HS-PS1-7

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

P+ 6Cl--> 4PCl
The reaction of 75.0g P4 with excess chlorine gas produces 110g PClin lab. Find the theoretical yield and calculate percent yield for the reaction. 

78%
64%
27%
33%

Tags

NGSS.HS-PS1-7

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