
stoich final
Authored by Jennifer Donovan
Chemistry
10th - 12th Grade
Used 11+ times

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30 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Theoretical yield = 73g
Actual yield = 62g
Calculate the percent yield.
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
When reacting Na with Cl2, we calculated that the theoretical yield should be 13 grams. Our actual yield was 12.5 grams. What is the percent yield?
90.4%
104%
96.15%
1.04%
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
The theoretical yield of a reaction is 237 grams, but the reaction actually yields 26 less grams than expected. What is the percent yield?
17.6%
82.4%
89.0%
121.3%
4.
MULTIPLE SELECT QUESTION
5 mins • 1 pt
Which of the following describes a limiting reactant?
The reactant that is not completely consumed during a reaction
None of this reactant is left over after the reaction take place
The reactant that is completely consumed during the reaction
Some of this reaction is left over after the reaction
5.
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. (Ar P=31, Cl = 35.5)
78%
64%
27%
33%
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
How many grams of FeS are formed from 7.62g of Fe reacted with excess S? (Ar Fe=55.9, S=32.1)
3.82g
7.62g
12.0g
11.4g
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Silver nitrate and sodium phosphate are reacted in equal amounts of 200 g each. How many grams of silver phosphate are produced?
3AgNO3 + Na3(PO4) ---> Ag3(PO4) + 3NaNO3
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