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Stoichiometry and Limiting Reactant

Authored by Ashley Michels

Chemistry

9th - 12th Grade

Used 1+ times

Stoichiometry and Limiting Reactant
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8 questions

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1.

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)

58.83%

308%

6435%

15.5

2.

MULTIPLE CHOICE QUESTION

15 mins • 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%

3.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

2Na + 2H2O → 2NaOH+ H2
How many grams of hydrogen are produced if 120 g of Na are available?

5.2 g
2.6 g
690 g
45 g

4.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Cl2 + 2 KBr → Br2 + 2 KCl
How many grams of potassium chloride can be produced from 356 g of chlorine and 356 g of potassium bromide?

749 g
223 g
479 g
814 g

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

B2H6 + 3O2 -->2 HBO2 + 2 H2O
 What mass of O2 will be needed to burn 36.1 g of B2H6?

13.8 g O2
3.86 mol of O2
124 g O2

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

4 Al + 3 O2 –> 2 Al2O How much aluminum would be needed to completely react with 45 grams of O2?

1.05 moles
3.75 moles
1.875 grams
1.875 moles

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

2Al + 3H2SO4 -> Al2(SO4)3 + 3H2
How many grams of aluminum sulfate would be formed if 250g H2SO4 completely reacted with aluminum?

0.85 g
290 g
450 g
870 g

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