
Percent Yeild
Quiz
•
Chemistry
•
12th Grade
•
Medium
Barrett Matthews
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8 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
When reacting Na with Cl2, we calculated that the theoretical yield should be 12.5 grams. Our actual yield was 13.0 grams. What is the percent yield?
Answer explanation
13.0 g / 12.5 x 100
actual/theoritical x 100
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
2Fe2O3 + C → Fe + 3CO2
You add 28 grams of carbon. You find the actual yield to be 181.2 grams of CO2. What is the percent yield of CO2? (Hint: calculate theoretical yield of CO2 first)
158.9%
Answer explanation
2Fe2O3 + C → Fe + 3CO2
GIVEN: 28 grams of carbon.
WANTED: grams CO2
actual / theoritical x 100
Actual = 181.2 grams of CO2
Theoritical = 307. 7
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Theoretical yield = 73g
Actual yield = 62g
Calculate the percent yield.
Answer explanation
Actual yield / Theoritical x 100 = percent yeild
62g / 73g x 100 =
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
In a lab, a scientist calculate he should produce 12.3 grams of product in his experiment. When he is finished collecting his product it weighs 10.1 grams. What is his percent yield?
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
CH4 + 2O2 → CO2 + 2H2O
24 grams of CH4 was added to the above reaction. Calculate the theoretical yield of CO2.
68 grams
Answer explanation
CH4 + 2O2 → CO2 + 2H2O
GIVEN: 24 grams of CH4
WANTED: g CO2 (theoritical yeild)
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
2Fe2O3 + C → Fe + 3CO2
You add 28 grams of carbon. You find the actual yield to be 181.2 grams of CO2. What is the percent yield of CO2? (Hint: calculate theoretical yield of CO2 first)
58.83%
308%
6435%
15.5
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
The reaction of 25.0 g benzene, C6H6, with excess HNO3 resulted in 21.4 g C6H5NO2. What is the percentage yield?
C6H6 + HNO3 → C6H5NO2 + H2O
100%
27.39%
54.29%
85.62%
Answer explanation
GIVEN: 25.0 g benzene,
WANTED: g C6H5NO2 (theoritical)
with excess HNO3 = plenty of HNO3
Actual 21.4 g C6H5NO2.
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