Stoichiometry Quiz - Practice MCQs with Answers

Our stoichiometry quiz consists of 15 multiple-choice questions. Each time your questions will be different because they will be coming randomly from a question bank. Test your understanding by attempting this quiz and see how much you score! Topics include limiting reagents, theoretical yield, percent yield, mole ratios, and reaction stoichiometry.

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1. If you have 1.5 moles of calcium nitrate (Ca(NO₃)₂), how many moles of nitrate ions are there?

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2. How many moles of NH₃ can be produced from 3 moles of N₂ in the reaction: N₂ + 3H₂ → 2NH₃?

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3. What mass of sodium sulfate (Na₂SO₄) will be formed from 23.0 g of sodium (Na) assuming an excess of sulfuric acid?

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4. The reaction for the decomposition of potassium chlorate is: 2KClO₃ → 2KCl + 3O₂ How many moles of O₂ can be produced from 3 moles of KClO₃?

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5. What volume of SO₂ at room temperature and pressure is produced when 9.7g of Zinc Sulfide (ZnS) reacts as follows: 2ZnS(s) + 3O₂(g) → 2ZnO(s) + 2SO₂(g)

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6. What is the mass of one mole of iodine molecules?

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7. One mole of propane has the same:

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8. The relative atomic mass of chlorine is 35.5. What is the mass of 2 moles of Chlorine gas?

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9. If four moles of SO₂ are oxidized to SO₃, how many moles of oxygen molecules are required?

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10. What is the limiting reagent when 4 moles of H2 and 3 moles of O2 react to form water?

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11. If 10 g of HCl reacts with excess NaOH, how many grams of NaCl are formed?

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12. Which unit is not typically used in stoichiometry calculations?

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13.

If 20 g of NaOH (Molar mass = 40 g/mol) is dissolved in 500 mL of water, what is the molarity of the solution?

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14. Calculate the mass of CO₂ produced when 10 g of C reacts with excess O₂.

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15.

What is a limiting reactant in a chemical reaction?

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The average score is 44%

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