Question

In: Chemistry

1. You perform some experiments for the reaction A→B+C

 

1. You perform some experiments for the reaction A→B+C

The rate law has the form: rate = k[A]x . Calculate the value of x for each of the following:

[A] is tripled, but there is no effect on the rate.

[A] is tripled, and the rate increases by a factor of 27.

2. FOR THE REATCION 2NO2→ 2NO(g) + O2 (g) the data given below was collected.

Time(s) 0s 1.0s 2.0s 3.0s

[NO2] 0.1103 0.1076 0.1050 0.1026

Obtain the average rate of decomposition of NO2 in units of M/s for each interval.

What is the order of the reaction with respect to NO2?

How long would it take for the concentration to decrease to 0.0900 M?

Solutions

Expert Solution

1. You perform some experiments for the reaction A→B+C

The rate law has the form: rate = k[A]x . Calculate the value of x for each of the following:

[A] is tripled, but there is no effect on the rate.

Since rate is not affected by changing [A], it is zero order reaction. So

[A] is tripled, and the rate increases by a factor of 27.

But

Hence,

Thus, the reaction is of third order in A.

2. The average rate of decomposition of NO2

With decrease in the concentration of NO2, the rate of the reaction decreases. This is characteristic of first order reaction.

Let t be the time required to decrease the concentration to 0.0900 M. The average rate of decomposition of NO2 will be slightly less than 0.0024 M/s but for simplicity, we assume it to be 0.0024 M/s

Hence, it will take 8.3 s for the concentration to decrease to 0.0900 M.

queen_honey_blossom answered 2 years ago
Next > < Previous

Related Solutions

a student performs a set of three experiments for the reaction A+ B -> C, measuring...
a student performs a set of three experiments for the reaction A+ B -> C, measuring the initial reaction rate each time. Their data is as follows [A]0 [B]0 initial rate (mol L-1s-1) 0.250 0.100 0.0151 0.500 0.200 0.0595 0.250 0.200 0.0601
The C++ question: This part of the assignment will give you a chance to perform some...
The C++ question: This part of the assignment will give you a chance to perform some simple tasks with pointers. The instructions below are a sequence of tasks that are only loosely related to each other. Start the assignment by creating a file named pointerTasks.cpp with an empty main function, then add statements in main() to accomplish each of the tasks listed below. Some of the tasks will only require a single C++ statement, others will require more than one....
The rate of reaction is defined as Rate = −1∆[A] = −1∆[B] = + 1∆[C] =...
The rate of reaction is defined as Rate = −1∆[A] = −1∆[B] = + 1∆[C] = +1∆[D] ?? ∆?? ?? ∆?? ?? ∆?? ?? ∆?? Average rate: the change in measured concentrations in any particular time period Instantaneous rate: the change in concentration at any one particular time Generally, the greater the concentration of reactant molecules, the faster the reaction Increasing temperature increases the reaction rate for most reactions Questions 1: Table I displays some data relating to an experiment...
Logic problems: 1. The argument “ All A are B. Some B are not C. //...
Logic problems: 1. The argument “ All A are B. Some B are not C. // Some C are not A.” is of the form expressed in figure one. A. True B. False 2.Assume the Aristotelian Perspective, if the sentence “Some carrots are not tasty” is true, then what is the truth value of  the following sentence " Some carrots are tasty. " A. true B. false C. undetermined D. none of the above 3. Which is the converse of the...
Consider the following reaction at 309 K. 1 A + 1 B → C + D...
Consider the following reaction at 309 K. 1 A + 1 B → C + D where rate = rate=k[A]2[B]. An experiment was performed for a certain number of seconds where [A]o = 1.07 M and [B]o = 0.000167 M. A plot of ln[B] vs time had a slope of -9.63. What will the rate of this reaction be if a new experiment is preformed when [A] = [B] = 0.212 M?
Topic Factors Affecting Reaction Rates LaTeX: A+B\Leftrightarrow C+DA + B ⇔ C + D 1. Using...
Topic Factors Affecting Reaction Rates LaTeX: A+B\Leftrightarrow C+DA + B ⇔ C + D 1. Using the reaction above, which way will the reaction move if we add more "A+B?" 2. Using the reaction above, which way will the reaction move if we remove "A+B?" 3. Using the reaction above, which way will the reaction move if we add more "C+D?" 4. Using the reaction above, which way will the reaction move if we remove "C+D?"
The reaction, A + 2 B → C was studied. The reagents A and B were...
The reaction, A + 2 B → C was studied. The reagents A and B were mixed and the time interval until a certain quantity of product C accumulated was measured. run 1: [A]initial = 0.100, [B]initial = 0.140, time = 25 s run 2: [A]initial = 0.050, [B]initial = 0.140, time = 50 s run 3: [A]initial = 0.100, [B]initial = 0.070, time = 100 s From this data, one conclusion that can be made is that the reaction...
Question: A reaction A + B <==> C has a standard free-... Save A reaction A...
Question: A reaction A + B <==> C has a standard free-... Save A reaction A + B <==> C has a standard free-energy change of -3.22 kj/mol at 25oC What are the concentrations of A, B, and C at equilibrium if at the beginning of the reaction their concentrations are 0.30M, 0.40M and 0M respectively? How would your answers above change if the reaction had a standard free-energy change of +4.88 kj/mol? ____ there would be no change to...
1. Your stoichiometry reaction is C → 1/3 D A. You know the reaction order is...
1. Your stoichiometry reaction is C → 1/3 D A. You know the reaction order is second order in C. What is the rate law for this reaction? (Remember it has three parts) B. If the reaction rate is 0.150 M/s when the concentration of C is 0.800, what rate would you expect if the concentration of C is 0.400M? C. What rate of formation of D would you expect for your answer in part B (using the rate for...
In this lesson, you created a summary of some of the experiments and knowledge that led...
In this lesson, you created a summary of some of the experiments and knowledge that led to the discovery of the DNA molecule. Attention Students: You may want to go through Module 7 before you start this assignment because it will give you further knowledge of the acceptance of DNA. (You'll notice that there is no other assignment for Module 7.) Now your job is to create a timeline with the scientists and their discoveries that led to DNA being...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT