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Ch.14 - Chemical Kinetics
Brown - Chemistry: The Central Science 14th Edition
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testoBrown 14th EditionCh.14 - Chemical KineticsProblema 23d
Capitolo 14, Problema 23d

For each of the following gas-phase reactions, indicate how the rate of disappearance of each reactant is related to the rate of appearance of each product:
(d) C2H5NH2(g) → C2H4(g) + NH3(g)

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Identify the balanced chemical equation for the reaction: C_2H_5NH_2(g) \(\rightarrow\) C_2H_4(g) + NH_3(g).
Recognize that the stoichiometric coefficients in the balanced equation are all 1, meaning each reactant and product is involved in a 1:1 ratio.
Understand that the rate of disappearance of the reactant C_2H_5NH_2 is equal to the rate of appearance of each product, C_2H_4 and NH_3, due to the 1:1 stoichiometry.
Express the rate of disappearance of C_2H_5NH_2 as -\(\frac{d[C_2H_5NH_2]}{dt}\).
Express the rate of appearance of the products as \(\frac{d[C_2H_4]}{dt}\) and \(\frac{d[NH_3]}{dt}\), and set them equal to the rate of disappearance of the reactant.

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Stoichiometry

Stoichiometry is the quantitative relationship between reactants and products in a chemical reaction. It allows us to determine how much of each substance is consumed or produced based on the balanced chemical equation. In the given reaction, the coefficients indicate the molar ratios of the reactants and products, which are essential for calculating rates of disappearance and appearance.
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Stoichiometry Concept

Rate of Reaction

The rate of reaction refers to the speed at which reactants are converted into products. It can be expressed in terms of the change in concentration of a reactant or product over time. Understanding how the rates of disappearance of reactants relate to the rates of appearance of products is crucial for analyzing the kinetics of the reaction.
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Average Rate of Reaction

Concentration Changes

Concentration changes refer to the variations in the amount of a substance in a given volume over time during a reaction. In the context of the reaction provided, the rate of disappearance of C2H5NH2 must be related to the rates of appearance of C2H4 and NH3. This relationship is often expressed using the stoichiometric coefficients from the balanced equation, allowing for the calculation of how quickly each substance is formed or consumed.
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Chemical Changes
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