Lesson 3 -Limiting reactants
Science
6 plays
3 questions
Question 1
Multiple Choice
10 points
Example: Methane,CH4, burns in oxygen, O2, to form carbon dioxide, CO2, and water vapor, H2O, according to the following equation πππ(π ) + πππ(π ) β πππ(π ) + ππππ(π ) . A sample of 0.250 moles of CH4 was burnt in 1.25 moles of O2. What is the limiting and excess reactant ?
A.πΆπ»4 ππ the limiting reactant and π2 ππ the eπ₯πππ π πππππ‘πππ‘ .
B.O2ππ the limiting reactant and CH4 ππ the eπ₯πππ π πππππ‘πππ‘ .
C.H2O ππ the limiting reactant and π2 ππ the eπ₯πππ π πππππ‘πππ‘ .
D.None of the above
Question 2
Multiple Choice
10 points
Zn+2HCl = H2+ZnCl2 Identify the limiting and excess reactants if 3 moles of Zn react with 4 mole of HCl
A.Zn ππ the limiting reactant and HCl ππ the eπ₯πππ π πππππ‘πππ‘ .
B.HCl ππ the limiting reactant and Zn ππ the eπ₯πππ π πππππ‘πππ‘ .
C.H2 ππ the limiting reactant and Zn ππ the eπ₯πππ π πππππ‘πππ‘ .
D.None of the above
Question 3
Multiple Choice
10 points
C2H6+O2 = CO2 +H2O Balance the chemical equation , then determine the limiting and excess reactants If 5 moles of ethane (C2H6) react with 16 moles of Oxygen (O2)
A.H2O ππ the limiting reactant and CO2 ππ the eπ₯πππ π πππππ‘πππ‘ .
B.C2H6 ππ the limiting reactant and O2 ππ the eπ₯πππ π πππππ‘πππ‘ .
C.O2 ππ the limiting reactant and C2H6 ππ the eπ₯πππ π πππππ‘πππ‘ .