Answer: First Order Reaction Rate Constant at 593K

In summary, a first order reaction is a chemical reaction where the rate is directly proportional to the concentration of one reactant. The rate constant is determined through experiments at different temperatures and is important in understanding the rate of the reaction and predicting its behavior. The temperature of 593K is significant as it is the temperature at which the rate constant was measured. The rate constant has practical applications in various fields and is used for studying degradation of pollutants, predicting product shelf life, and understanding complex chemical systems.
  • #1
Soaring Crane
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The first-order reaction, SO2Cl2 --> SO2 + Cl2, has a rate constant equal to 2.20 x 10-5 s-1 at 593 K. What percentage of the initial amount SO2Cl2 will remain after 2.00 hours?


a.1.00%

b.14.7%

c.17.1%

d.85.4%

ln [a]t/[a]0 = -kt

ln [a] = -(2.20 x 10-5 s-1)(7200 s)

ratio of a = e^-0.1584 = 0.8535

Is this correct? Thanks.
 
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  • #2
everything seems fine
 
  • #3


Yes, your calculation is correct. The correct answer is d. 85.4%. This means that after 2.00 hours, 85.4% of the initial amount of SO2Cl2 will remain in the reaction. This can also be interpreted as 14.6% of the initial amount of SO2Cl2 has been consumed in the reaction after 2.00 hours. This information can be useful in understanding the kinetics of this reaction and predicting the amount of reactants and products present at different time intervals.
 

1. What is a first order reaction?

A first order reaction is a chemical reaction in which the rate of the reaction is directly proportional to the concentration of only one reactant. This means that if the concentration of the reactant is doubled, the rate of the reaction will also double. First order reactions are commonly found in radioactive decay and some types of enzyme reactions.

2. How is the first order reaction rate constant determined?

The first order reaction rate constant is determined by conducting experiments at different temperatures and measuring the rate of the reaction. The data is then plotted on a graph and the slope of the line is equal to the rate constant. The rate constant is also dependent on the activation energy of the reaction and the concentration of the reactant.

3. Why is the first order reaction rate constant important?

The first order reaction rate constant is important because it provides information about the rate of the reaction and how it is affected by different factors such as temperature and concentration. It is also used in the calculation of reaction mechanisms and in predicting the behavior of the reaction under different conditions.

4. What is the significance of 593K in the first order reaction rate constant?

593K (or 320°C) is the temperature at which the first order reaction rate constant was measured. Temperature plays a crucial role in determining the rate of a reaction, and the rate constant is dependent on the temperature at which the reaction is taking place. By measuring the rate constant at a specific temperature, scientists can better understand the behavior of the reaction at that temperature.

5. How can the first order reaction rate constant be used in practical applications?

The first order reaction rate constant has many practical applications in fields such as chemistry, biology, and environmental science. It can be used to study the degradation of pollutants in the environment, predict the shelf life of products, and optimize reaction conditions in the production of pharmaceuticals. It is also used in kinetic modeling to understand and predict the behavior of complex chemical systems.

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