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Ch.14 - Chemical Kinetics
Tro - Chemistry: A Molecular Approach 4th Edition
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Tutti i libri di testoTro 4th EditionCh.14 - Chemical KineticsProblema 25c
Capitolo 14, Problema 25c

Consider the reaction:
2 HBr (g) → H2 (g) + Br2 (g)
c. If the volume of the reaction vessel in part b was 1.50 L, what amount of Br2 (in moles) was formed during the first 15.0 s of the reaction?

Guida verificata passo dopo passo
1
Identify the balanced chemical equation for the reaction: 2 HBr (g) → H2 (g) + Br2 (g). This indicates that 2 moles of HBr produce 1 mole of Br2.
Determine the rate of the reaction from the given information or previous parts of the problem. The rate will tell you how much HBr is being consumed over a certain period.
Calculate the amount of HBr consumed in the first 15.0 seconds using the rate of the reaction.
Use the stoichiometry of the reaction from the balanced equation to find the amount of Br2 formed. Since 2 moles of HBr produce 1 mole of Br2, divide the moles of HBr consumed by 2 to get the moles of Br2 formed.
Ensure the units are consistent and the calculations are correct to find the moles of Br2 produced in the given time frame.

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Stoichiometry

Stoichiometry is the calculation of reactants and products in chemical reactions based on the balanced chemical equation. It allows us to determine the relationships between the quantities of substances involved in a reaction, such as how many moles of one substance are produced from a given amount of another. In this case, understanding the stoichiometric coefficients from the reaction equation is essential to calculate the amount of Br2 formed.
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Stoichiometry Concept

Ideal Gas Law

The Ideal Gas Law relates the pressure, volume, temperature, and number of moles of a gas through the equation PV = nRT. This law is crucial for understanding how gases behave under different conditions and can be used to calculate the number of moles of a gas when the volume and other parameters are known. In this question, it may be necessary to apply this law to find the moles of Br2 produced in the given volume.
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Ideal Gas Law Formula

Reaction Rate

Reaction rate refers to the speed at which reactants are converted into products in a chemical reaction. It can be influenced by various factors, including concentration, temperature, and the presence of catalysts. In this scenario, knowing the reaction rate is important to determine how much Br2 is formed over a specific time period, which is 15.0 seconds in this case.
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Average Rate of Reaction
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