Ch.3 - Chemical ReactionsWorksheetSee all chapters
All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants.2Na(s) + Br2(g) → 2NaBr(s)2.5 mol Na, 1 mol Br2

Solution: For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants.2Na(s) + Br2(g) → 2NaBr(s)2.5 mol Na, 1 mol Br2

Problem

For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants.
2Na(s) + Br2(g) → 2NaBr(s)

2.5 mol Na, 1 mol Br2

Solution

The limiting reactant is defined as the reactant which is consumed at the end of the reaction.


The maximum amount of products that can be formed in a chemical reaction is limited by the amount of the limiting reactant.


We can determine the limiting reactant by calculating the amount of products that form through each of the reactants. This can be done by doing a mole to mole comparison between the reactants and the products. For this, we will use the coefficients of reactants and products from the balanced equation.


The reactant, that produces the smallest amount of products, is the limiting reactant.


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