Limiting and Excess Reactants

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.

• AlCl3

• Cl2

• Al

Tags

NGSS.HS-PS1-7

Zn + 2HCI → ZnCI₂ + H₂. If 0.3 mol Zn and 0.52 mol HCI added, which is limiting?

• Zn

• HCI

• ZnCI₂

• None of the above

Tags

NGSS.HS-PS1-7

What is the limiting reactant when 21g CH₄ and 15g H₂O are combined? (CH₄ = 16.043 g/mol; H₂O = 18.015 g/mol)

• CH₄

• H₂O

• CO₂

• H₂

Tags

NGSS.HS-PS1-7

When 12 moles of O₂ reacts with 1.2 moles of C₁₀H₈ what is the limiting reactant?  C₁₀H₈ + 12 O₂ --> 10 CO₂ + 4 H₂O

• Oxygen

• C₁₀H₈

• Water

• Carbon Dioxide

Tags

NGSS.HS-PS1-7

What is the limiting reactant if 16 moles of NH₃ and 30.0 moles of NO are combined?

• NH₃

• NO

• N₂

• water

Tags

NGSS.HS-PS1-7

Use the equation 2 Al + 3 Cl₂ ---> 2 AlCl₃. If 2 moles of aluminum and 2 moles of chlorine are combined, identify the limiting reactant.

• AlCl₃

• Cl₂

• Al

What is the limiting reactant when 5 moles of P₄ and 18 moles of O₂ are combined?

• P₄

• O₂

• P₄O₆

• none of the above

Tags

NGSS.HS-PS1-7

If 7.62g Fe and 8.67g S are combined, what is the limiting reactant? (Fe = 55.845 g/mol; S = 32.066 g/mol)

• Fe

• S

• FeS

• none

Tags

NGSS.HS-PS1-7

This is what you call a reactant that you have plenty of. The one that DOES NOT run out.

• Limiting Reactant

• Excess Reactant

• Highly Reactant

• Super Reactant

• None