Limiting Reactants and Percent Yield Practice

Use the equation 2 Al + 3 Cl₂ ⟶ 2 AlCl₃. If 2 moles of aluminum and 2 moles of chlorine are reacted, identify the limiting reactant and state the theoretical yield of product.

• Cl₂

• Al

• 2.0 mol AlCl₃

• 1.3 mol AlCl₃

Tags

NGSS.HS-PS1-7

Theoretical yield = 73.0g

Actual yield = 62.0g

Calculate the percent yield.

• 1.16%

• 116%

• 84.9%

• 76.0%

4NH₃ + 5O₂ ⟶ 4NO + 6H₂O

How many grams of NO are formed if 6.30g of ammonia react with 1.80g of oxygen?

• 0.370g

• 0.0450g

• 1.35g

• 11.1g

Tags

NGSS.HS-PS1-7

NGSS.HS-PS1-2

3NH₄NO₃ + Na₃PO₄ ⟶ (NH₄)₃PO₄ + 3 NaNO₃

If 30 g of NH₄NO₃ and 50 g of Na₃PO₄ react, identify the limiting reactant.

• ammonium phosphate

• sodium phosphate

• ammonium nitrate

• sodium nitrate

Tags

NGSS.HS-PS1-7

CuCl₂ + 2NaNO₃ ⟶ Cu(NO₃)₂ + 2NaCl

If 15.0 grams of CuCl₂ react with 20.0 g of NaNO₃, what mass of NaCl will be produced?

• 13.0 g of NaCl

• 98 g of NaCl

• 26 g of NaCl

• 17.4 of NaCl

Tags

NGSS.HS-PS1-7

SO₂ + PCl₅ ⟶ SOCl₂ + POCl₃

What mass of SOCl₂ is produced when 16.2g SO₂ react with 13.7g PCl₅?

• 7.87g

• 30.1g

• 26.4g

• 19.8g

Tags

NGSS.HS-PS1-7

C₃H₈ + 5O₂ ⟶ 3CO₂ + 4H₂O

What mass of carbon dioxide will be produced when 3.0g of propane is burned in 2.1g of oxygen?

• 0.55g

• 0.038g

• 2.9g

• 0.90g

Tags

NGSS.HS-PS1-2

Al(OH)₃ + 3HCl ⟶ 3H₂O + AlCl₃

14 grams of Al(OH)₃ is completely reacted with excess hydrochloric acid. If you actually recovered 22.0 grams of aluminum chloride, what is the percent yield of the reaction?

• 100%

• 25%

• 92%

• 69%

Tags

NGSS.HS-PS1-7

What is the limiting reactant if 10.0 moles of NH₃ react with 30.0 moles of NO?

4NH₃ + 6NO ⟶ 5N₂ + 6H₂O

• NH₃

• NO

• N₂

• water

Tags

NGSS.HS-PS1-7

When 13.0 moles of O₂ reacts with 1.50 mole of C₁₀H_8,

how many moles of CO₂ will be produced?

 C₁₀H₈ + 12 O₂ ⟶ 10 CO₂ + 4 H₂O

• 10.8 moles CO₂

• 15.0 moles CO₂

• 13.0 moles CO₂

• 14.5 moles CO₂

• 1.50 moles CO₂

Tags

NGSS.HS-PS1-7