by Claretta Queen
Stoichiometry is the key to unlocking the quantitative mysteries of chemical reactions. By mastering this topic, you can predict the amounts of substances consumed and produced in reactions, ensuring precision in chemical processes. Dive into this quiz to challenge your knowledge and refine your skills in stoichiometry. Good luck!
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Stoichiometry Quiz Questions Overview
1. What is the mole ratio of hydrogen to oxygen in the formation of water?
2:1
1:2
1:1
2:2
2. How many moles of CO₂ are produced when 2 moles of C₃H₈ combust completely?
3 moles
6 moles
4 moles
8 moles
3. What is the molar mass of NaCl?
58.5 g/mol
45.5 g/mol
60.5 g/mol
50 g/mol
4. How many grams of H₂O are produced from 16 grams of CH₄?
18 grams
36 grams
32 grams
16 grams
5. What is the limiting reactant when 5 moles of A react with 10 moles of B according to the reaction: A + 2B → AB₂?
A
B
Both A and B
Neither A nor B
6. What is the theoretical yield of CO₂ if 44 grams of C₃H₈ are combusted?
88 grams
132 grams
44 grams
176 grams
7. If 0.5 moles of H₂ react with 0.5 moles of O₂, how many moles of H₂O are formed?
0.5 moles
1 mole
0.25 moles
2 moles
8. What is the percent yield if 8 grams of product are obtained from a reaction with a theoretical yield of 10 grams?
80%
90%
70%
60%
9. How many liters of O₂ at STP are required to react with 2 moles of H₂?
22.4 liters
44.8 liters
11.2 liters
33.6 liters
10. What is the empirical formula of a compound that is 40% carbon, 6.7% hydrogen, and 53.3% oxygen by mass?
CH₂O
C₂H₄O₂
CH₄O
C₃H₆O₃
11. How many grams of NaOH are needed to prepare 250 mL of a 2 M solution?
20 grams
40 grams
10 grams
30 grams
12. What is the molarity of a solution containing 5 moles of solute in 2 liters of solution?
2.5 M
5 M
10 M
2 M
13. How many grams of KCl are required to make 500 mL of a 1 M solution?
37.25 grams
74.5 grams
50 grams
25 grams
14. What volume of 0.5 M H₂SO₄ is needed to neutralize 25 mL of 1 M NaOH?
25 mL
50 mL
12.5 mL
100 mL
15. What is the mass percent of oxygen in H₂O?
88.9%
66.7%
33.3%
50%
16. How many moles of HCl are needed to react with 1 mole of CaCO₃?
2 moles
1 mole
0.5 moles
3 moles
17. What is the empirical formula of a compound with 40% C, 6.7% H, and 53.3% O by mass?
CH₂O
C₂H₄O₂
CH₄O
C₃H₆O₃
18. How many moles of NaOH are needed to neutralize 1 mole of H₂SO₄?
2 moles
1 mole
0.5 moles
3 moles
19. What is the volume of 1 mole of any gas at STP?
22.4 liters
44.8 liters
11.2 liters
33.6 liters
20. How many grams of CO₂ are produced from 88 grams of C₃H₈?
132 grams
88 grams
176 grams
44 grams
21. What is the limiting reactant when 2 moles of A react with 3 moles of B according to the reaction: A + 2B → AB₂?
B
A
Both A and B
Neither A nor B
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