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Ch.4 - Chemical Quantities & Aqueous Reactions
Tro - Chemistry: A Molecular Approach 4th Edition
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Tutti i libri di testoTro 4th EditionCh.4 - Chemical Quantities & Aqueous ReactionsProblema 38
Capitolo 4, Problema 38

Find the limiting reactant for each initial amount of reactants. 4 Al(s) + 3 O2( g) → 2 Al2O3(s)
a. 1 mol Al, 1 mol O2
b. 4 mol Al, 2.6 mol O2
c. 16 mol Al, 13 mol O2
d. 7.4 mol Al, 6.5 mol O2

Guida verificata passo dopo passo
1
Identify the balanced chemical equation: 4 Al(s) + 3 O_2(g) → 2 Al_2O_3(s).
For each scenario, calculate the mole ratio of Al to O_2 based on the balanced equation, which is 4:3.
a. Calculate the amount of Al needed to react with 1 mol of O_2 using the ratio: (4 mol Al / 3 mol O_2) * 1 mol O_2.
b. Calculate the amount of O_2 needed to react with 4 mol of Al using the ratio: (3 mol O_2 / 4 mol Al) * 4 mol Al.
Compare the calculated amounts with the given amounts to determine the limiting reactant for each scenario.

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Limiting Reactant

The limiting reactant is the substance that is completely consumed first in a chemical reaction, thus determining the maximum amount of product that can be formed. To identify it, one must compare the mole ratio of the reactants used in the reaction to the coefficients in the balanced chemical equation.
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Limiting Reagent Concept

Stoichiometry

Stoichiometry is the calculation of reactants and products in chemical reactions based on the balanced equation. It involves using mole ratios derived from the coefficients of the balanced equation to determine how much of each reactant is needed or how much product can be formed from given amounts of reactants.
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Stoichiometry Concept

Mole Ratio

Mole ratio is the ratio of moles of one substance to the moles of another substance in a balanced chemical equation. It is essential for converting between moles of reactants and products, allowing chemists to predict how much of each reactant is required or how much product will be produced in a reaction.
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Neutron-Proton Ratio
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