Find the limiting reactant and how much product forms

Question 1

CH₄ + 2O₂ → CO₂ + 2H₂O. 6 mol of methane reacts with 1 mol of oxygen. What is the maximum amount of carbon dioxide that can form, in mol? Give 2 decimal places if needed.

Answer mol

Question 2

Why is one reactant often used in excess in industry?

• A. To make sure all of the more expensive reactant reacts
• B. To slow the reaction down
• C. Because excess reactants are free
• D. To make the product impure on purpose

Question 3

CH₄ + 2O₂ → CO₂ + 2H₂O. 5 mol of methane is mixed with 1 mol of oxygen. Which is the limiting reactant?

• A. methane
• B. oxygen

Question 4

2H₂ + O₂ → 2H₂O. 6 mol of hydrogen reacts with 6 mol of oxygen. What is the maximum amount of water that can form, in mol? Give 2 decimal places if needed.

Answer mol

Question 5

Doubling the amount of the reactant in excess will…

• A. double the product
• B. stop the reaction
• C. halve the product
• D. not change the amount of product

Question 6

2Na + Cl₂ → 2NaCl. 2 mol of sodium is mixed with 8 mol of chlorine. Which is the limiting reactant?

• A. sodium
• B. chlorine

Question 7

Mg + 2HCl → MgCl₂ + H₂. 5 mol of magnesium reacts with 6 mol of hydrochloric acid. What is the maximum amount of hydrogen that can form, in mol? Give 2 decimal places if needed.

Answer mol

Question 8

Why is one reactant often used in excess in industry?

• A. Because excess reactants are free
• B. To make the product impure on purpose
• C. To slow the reaction down
• D. To make sure all of the more expensive reactant reacts

Question 9

2Na + Cl₂ → 2NaCl. 4 mol of sodium is mixed with 8 mol of chlorine. Which is the limiting reactant?

• A. sodium
• B. chlorine

Question 10

CH₄ + 2O₂ → CO₂ + 2H₂O. 2 mol of methane reacts with 3 mol of oxygen. What is the maximum amount of carbon dioxide that can form, in mol? Give 2 decimal places if needed.

Answer mol

Question 11

Why is one reactant often used in excess in industry?

• A. To make the product impure on purpose
• B. Because excess reactants are free
• C. To slow the reaction down
• D. To make sure all of the more expensive reactant reacts

Question 12

Mg + 2HCl → MgCl₂ + H₂. 6 mol of magnesium is mixed with 2 mol of hydrochloric acid. Which is the limiting reactant?

• A. magnesium
• B. hydrochloric acid

Question 13

2H₂ + O₂ → 2H₂O. 3 mol of hydrogen reacts with 4 mol of oxygen. What is the maximum amount of water that can form, in mol? Give 2 decimal places if needed.

Answer mol

Question 14

Doubling the amount of the reactant in excess will…

• A. not change the amount of product
• B. stop the reaction
• C. halve the product
• D. double the product

Question 15

N₂ + 3H₂ → 2NH₃. 3 mol of nitrogen is mixed with 1 mol of hydrogen. Which is the limiting reactant?

• A. nitrogen
• B. hydrogen

Question 16

2H₂ + O₂ → 2H₂O. 6 mol of hydrogen reacts with 4 mol of oxygen. What is the maximum amount of water that can form, in mol? Give 2 decimal places if needed.

Answer mol