Limiting Reactant in the Stoichiometry of Chemical Reactions

4.4: Determining the Limiting Reactant

Calculating amounts of reactants and products (worked example)

Calculating the amount of product formed from a limiting reactant (worked example)

Excess & Limiting Reactants | Formula, Steps & Example

SOLVED: When does a chemical reaction stop?Chemical reactions never stop.When the limiting reactant is used up.When the lab is finished:When the excess reactant is used up.

Questions1) The hydrogen generated in this lab was a product of the reaction between magnesium and hydrochloric acid.Which of these reactants was the limiting reactant? Provide experimental evidence to support your choice.2) Suppose when you inverted the eudiometer, a bubble of air became trapped inside it. Would this make yourexperimental value of R larger, smaller, or have no effect? Briefly explain your response.3) In Santa Monica, a sample of dry hydrogen gas inflates a balloon to 43.0 mL at

Classroom Resources | Understanding Limiting Reactants | AACT