Limiting Reactant Quiz

What is the main goal of a limiting reactant problem?

• To find the limiting reactant

• To determine the excess reactant

• To calculate the total mass of reactants

• To identify the products formed

In a chemical reaction, what does the limiting reactant determine?

• The amount of product formed

• The temperature of the reaction

• The amount of excess reactant

• The speed of the reaction

What is the first step in setting up a stoichiometry problem?

• Calculating the molar mass

• Identifying the products

• Balancing the chemical equation

• Listing the given reactants

What is the molar mass of zinc used in the calculation?

• 2 g/mol

• 65.4 g/mol

• 79.1 g/mol

• 1 g/mol

How many grams of H2 can be produced from 79.1 grams of zinc?

• 2.42 grams

• 8.55 grams

• 5.00 grams

• 1.00 gram

What is the total mass of one mole of hydrogen fluoride (HF)?

• 20 g/mol

• 19 g/mol

• 1 g/mol

• 2 g/mol

How many grams of H2 can be produced from hydrogen fluoride?

• 2.42 grams

• 8.55 grams

• 5.00 grams

• 1.00 gram

Which reactant is identified as the limiting reactant in this problem?

• Zinc

• Fluorine

• Hydrogen

• Hydrogen fluoride

What happens when the limiting reactant is completely consumed?

• The reaction speeds up

• The reaction stops

• The reaction continues with the excess reactant

• The reaction reverses

What is the role of the excess reactant in a chemical reaction?

• It forms the main product

• It is completely consumed

• It determines the reaction rate

• It remains after the reaction