Calculating Yield and Percentage Yield in Chemical Reactions
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Chemistry, Science, Engineering
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University
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Hard
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the percentage yield if 5 grams of product is obtained from a reaction with a theoretical yield of 10 grams?
50%
100%
75%
25%
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the example reaction, what is the theoretical mass of copper chloride that should be produced?
10 grams
5 grams
8.47 grams
6.5 grams
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is NOT a reason for not achieving 100% yield in a reaction?
Impurities in reactants
Loss of product during separation
Accurate measurement of products
Incomplete reaction
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does atom economy measure in a chemical reaction?
The cost of the reactants
The speed of the reaction
The efficiency of converting reactants to useful products
The amount of waste produced
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the atom economy calculated?
By multiplying the mass of reactants by 100
By dividing the mass of desired products by the total mass of reactants
By subtracting the mass of waste from the mass of products
By adding the mass of reactants and products
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which method of producing copper chloride has a higher atom economy?
Using copper carbonate and hydrochloric acid
Neither method has a high atom economy
Using copper oxide and hydrochloric acid
Both methods have the same atom economy
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the atom economy percentage for the method using copper oxide and hydrochloric acid?
50%
76.7%
88.2%
68.4%
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