Prentice Hall Chemistry Chapter 12: Stoichiometry Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

Page 1

Question 1 1. How many moles of N2 are needed to produce 18 moles NH3 in the reaction N2 + 3H2 = 2NH3?

Question 2 2. How is percent yield calculated?

Question 3 3. How many moles of Na are needed to produce 15 moles of NaCl in the reaction 2Na + Cl2 = 2NaCl?

Question 4 4. What is the actual yield?

Question 5 5. At STP, how much space (in liters) will 0.750 moles of argon gas occupy?

Page 2

Question 6 6. Determine the actual yield if the theoretical yield is 12 g and the percentage yield is 90%.

Question 7 7. Determine the percent yield if the theoretical yield is 20 g and the actual yield is 15 g.

Question 8 8. How is a mole ratio used?

Question 9 9. How do you determine the amount of product made?

Question 10 10. Where do you look to find the molar ratio?

Page 3

Question 11 11. What is theoretical yield?

Question 12 12. Say you take a reactant A and calculate the amount of moles of another reactant B required to use up all of A. How do you know which of two reactants is the limiting one?

Question 13 13. Which of the following mole ratio is NOT appropriate to the equation 6CO2+ 6H2 O = C6 H12 O6+ 6O2?

Question 14 14. Select the most suitable definition for stoichiometry.

Question 15 15. If 4.0 moles of HCl react with 5.0 moles of NaOH to make NaCl and H2 O in the equilibrium reaction HCl+ NaOH = NaCl + H2 O, what is the limiting reactant?

Page 4

Question 16 16. What is a coefficient?

Question 17 17.

Choose the correctly balanced equation for the following reaction:

Potassium + water → potassium hydroxide + hydrogen gas

Question 18 18. Conservation of matter means that:

Question 19 19. Which of the following equations is balanced?

Question 20 20.

Choose the correctly balanced equation for the following reaction:

Sodium + water → sodium hydroxide + hydrogen gas

Page 5

Question 21 21. You conduct an experiment that requires the creation of an ammonia solution. You do this by reacting 50.0 L of nitrogen gas with excess hydrogen gas at STP to create ammonia gas using the Haber process given by the following reaction: N2 (g) + 3H2 (g) → 2NH3 (g). Assuming the reaction had 100% yield, you then bubble the ammonia into 5.0 L of water. What is the molarity of the resulting ammonia solution?

Question 22 22. If 2.5 moles of zinc react with 6.0 moles of hydrochloric acid in the equation Zn + 2HCl = ZnCl2 + H2, what is the limiting reactant?

Question 23 23. What is a limiting reactant?

Question 24 24. How many moles of solute are in a 0.50 L solution of 3.0 molarity?

Question 25 25. What is meant by the term molar volume?

Prentice Hall Chemistry Chapter 12: Stoichiometry Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

Prentice Hall Chemistry: Online Textbook Help  /  Science Courses
Support