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10th grade Find the limiting reactant worksheet

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Find the limiting reactant

Grade 10 Science Worksheet - Challenge Me

NameDate

Circle the best answer, or write your answer on the line.

  1. 12.601 g of baking soda (84.01 g/mol) meets 10.51 g of vinegar acid (60.06 g/mol); they react 1 : 1 to give CO₂ (44.01 g/mol). How many grams of CO₂ form, to 0.01 g, Esme?

  2. 8.401 g of baking soda (84.01 g/mol) meets 12.012 g of vinegar acid (60.06 g/mol); they react 1 : 1 to give CO₂ (44.01 g/mol). How many grams of CO₂ form, to 0.01 g, Jun?

  3. 33.604 g of baking soda (84.01 g/mol) meets 18.018 g of vinegar acid (60.06 g/mol); they react 1 : 1 to give CO₂ (44.01 g/mol). How many grams of CO₂ form, to 0.01 g, Kira?

  4. Ari says the reactant with fewer grams is always the limiting one. Which reply fits, Luz?

    • Agree, when both reactants are solids
    • Disagree: compare moles divided by coefficients, not grams
    • Agree: less mass means it runs out first

  5. Luz says that with 4.04 g of H₂ and 16.00 g of O₂, the H₂ limits because it has less mass. Which reply fits, Milo?

    • Agree: hydrogen is the limiting gas in this equation
    • Agree: 4.04 g is less than 16.00 g
    • Disagree: 0.5 mol of O₂ is less than the 1 mol needed

  6. Pia says the amount of product depends on the reactant in excess. Which reply fits, Noah?

    • Disagree: the limiting reactant sets the product
    • Agree: more of a reactant means more product
    • Agree: the extra reactant makes extra product

  7. Respiration: 90.09 g of glucose (180.18 g/mol) and 64.00 g of O₂ (32.00 g/mol). Which is limiting, and how much CO₂ forms, Pia?

    • Glucose limits, giving 132.03 g of CO₂
    • O₂ limits; 2 mol of CO₂, or 88.02 g, forms
    • O₂ limits, but CO₂ is 64.00 g, the O₂'s mass

  8. Baking soda, 25.203 g (84.01 g/mol, 0.3 mol), and vinegar acid, 0.2 mol, react 1 : 1. How many grams of CO₂ (44.01 g/mol) form, Tala?

    • 25.20 g, the baking soda's mass
    • 8.80 g, from the 0.2 mol of acid
    • 13.20 g, from the 0.3 mol of baking soda

  9. Respiration: 0.5 mol of glucose meets 2 mol of O₂. How much glucose is left over, Zee?

    • About 0.17 mol of glucose
    • About 0.33 mol of glucose
    • No glucose: the glucose is used up

  10. In 2H₂ + O₂ → 2H₂O, 3 mol of H₂ and 1 mol of O₂ react. How many grams of H₂ (2.02 g/mol) are left over, Ari?

    • 0 g: the H₂ is used up
    • 2.02 g of H₂
    • 4.04 g of H₂
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10th grade Find the limiting reactant worksheet – printable
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About this worksheet

Find the limiting reactant. Every version has 10 questions, and the answer key prints on the second page.

What your child will learn

  • I can find the limiting reactant by dividing each reactant's moles by its coefficient.
  • I can use the limiting reactant, not the one in excess, to find how much product forms.
  • I can find how much of the excess reactant is left over, and why grams alone can't decide.

Standard: HS-PS1-7

Words to know

limiting reactant: The reactant that runs out first and sets the product

excess reactant: The reactant left over when the reaction stops

leftover: What you had minus what the limiting reactant uses

Common mistakes

Your child picked the smaller amount. Compare each amount with what the recipe or equation needs: divide by how many each product uses.

Your child compared grams. Change grams to moles before comparing; light molecules give many moles per gram.

Your child used the reactant in excess. The product depends on the reactant that runs out first.

Questions parents ask

What is the most common mistake with find the limiting reactant?

Your child picked the smaller amount. Compare each amount with what the recipe or equation needs: divide by how many each product uses.

Are these 10th grade science worksheets free to print?

Yes. All 6 printable versions at each level are free to print, with the answer key, and no account is needed.

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