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Ch.4 - Chemical Quantities & Aqueous Reactions
Tro - Chemistry: A Molecular Approach 4th Edition
Tro4th EditionChemistry: A Molecular ApproachISBN: 9780134112831Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testoTro 4th EditionCh.4 - Chemical Quantities & Aqueous ReactionsProblema 41
Capitolo 4, Problema 41

Calculate the theoretical yield of the product (in moles) for each initial amount of reactants.
Ti(s) + 2 Cl2(g) → TiCl4(s)
a. 4 mol Ti, 4 mol Cl2
b. 7 mol Ti, 17 mol Cl2
c. 12.4 mol Ti, 18.8 mol Cl2

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Determine the balanced chemical equation for the reaction: Ti(s) + 2 \(\text{Cl}\)_2(g) \(\rightarrow\) \(\text{TiCl}\)_4(s)
Identify the stoichiometric coefficients from the balanced equation: 1 mol of Ti reacts with 2 mol of Cl_2 to produce 1 mol of TiCl_4.
Calculate the moles of TiCl_4 that can be produced from 7 mol of Ti: Since 1 mol of Ti produces 1 mol of TiCl_4, 7 mol of Ti can produce 7 mol of TiCl_4.
Calculate the moles of TiCl_4 that can be produced from 17 mol of Cl_2: Since 2 mol of Cl_2 are needed to produce 1 mol of TiCl_4, 17 mol of Cl_2 can produce 17/2 = 8.5 mol of TiCl_4.
Determine the theoretical yield by identifying the limiting reactant: The limiting reactant is Ti, as it produces fewer moles of TiCl_4 (7 mol) compared to Cl_2 (8.5 mol). Therefore, the theoretical yield of TiCl_4 is 7 mol.

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Stoichiometry

Stoichiometry is the branch of chemistry that deals with the quantitative relationships between reactants and products in a chemical reaction. It allows chemists to predict the amounts of substances consumed and produced in a reaction based on balanced chemical equations. Understanding stoichiometry is essential for calculating theoretical yields, as it provides the mole ratios needed to determine how much product can be formed from given amounts of reactants.
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Stoichiometry Concept

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. Identifying the limiting reactant is crucial for yield calculations, as it dictates the extent of the reaction. In the given reaction, comparing the mole ratios of Ti and Cl2 will reveal which reactant limits the formation of TiCl4.
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Limiting Reagent Concept

Theoretical Yield

Theoretical yield is the maximum amount of product that can be generated from a given amount of reactants, calculated based on the stoichiometry of the balanced equation. It assumes complete conversion of the limiting reactant with no losses or side reactions. Theoretical yield is expressed in moles or grams and is a key concept in evaluating the efficiency of a chemical reaction.
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Percent Yield in Reactions
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