Limiting Reactant

The limiting reactant

• slows the reaction down
• is used up first
• is the reactant that is left over
• controls the speed of the reaction

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

What is the limiting reactant if 10 moles of NH₃  react  with 30.0 moles of NO?
4NH₃+6NO --> 5N₂ + 6H₂O

• NH₃
• NO
• N₂
• water

Tags

NGSS.HS-PS1-7

4NH₃ + 5O₂ --> 4NO + 6H₂O
How many grams of NO are formed if 6.30g of ammonia react with 1.80g of oxygen? 

• 0.37g
• 0.045g
• 1.35g
• 11.1g

Tags

NGSS.HS-PS1-7

4NH₃ + 5O₂ --> 4NO + 6H₂O
How much excess reactant is leftover after if 6.30g of ammonia react with 1.80g of oxygen? 

• 9.75 g NH₃
• 4.80 g O₂
• 0.765 g NH₃
• 5.54 g NH₃

Tags

NGSS.HS-PS1-7

2 NaCl + Pb(NO₃)₂ --> 2 NaNO₃ + PbCl₂
 
How many grams of lead II chloride are produced from the reaction of 15.3 g of NaCl and 60.8 g of Pb(NO₃)₂? 

• 21.5g
• 51.1g
• 43.4g
• 36.4g

Tags

NGSS.HS-PS1-7