Here is information that you will need to help me solve my poblem:
C. (Given the values for m,p,and n caculate the rate constant k for each mixtureby simply substituting those orders, the initial concentrations, and the observed rate from the table....)so I did that and got:
Mixture
k
I= 2.23x10^(-4)
II= 1.56x10^(-4)
III= 4.38x10^(-4)
IV= 2.73x10^(-4)
Average All the number above added together and divided by 4)=
2.725x10^(-4)
E. Time for reaction at about 10 degrees celsius= 150 sec
10 degrees celsius= 283 K
Time for reaction at about 40 degrees celsuis (313 K)= 32 sec
Time for reaction at room temp 25 degrees celsius (298 K)= 143 sec
Based on C and E the problem is:
Calculate the rate constant at each temperature from your data, following the procedure in part C. (note that for E they wanted us to use one reaction mixture- I chose Nr. I)
They give you a chart in which they want you to fill in the Rate, k, lnk and i/((T)x(K)) for 10 C
40 C
room temp
My questions:
Is the rate the time I observed above...150 sec, 32 sec and 143 sec?
Is k the same k for I in part C?
Does T(K) in 1/((T)x(K)) just stand for the temperature in Kalvin?
Is it correct that K would be the same for all three temperatures?
I hope this isn't too much! I have been thinking about this and I am just not sure if what I am thinking is quite right.
I can help clarify your questions:
1. Is the rate the time I observed above...150 sec, 32 sec, and 143 sec?
No, the rate is not the time observed. The rate is the change in concentration of a reactant or product per unit time. It is usually expressed in terms of the change in concentration divided by the change in time. The values you have provided for 150 sec, 32 sec, and 143 sec are the times it took for the reaction to occur at different temperatures.
2. Is k the same k for I in part C?
Yes, k in part C refers to the rate constant for each mixture. The values you calculated for Mixtures I, II, III, and IV are the rate constants for those mixtures.
3. Does T(K) in 1/((T)x(K)) just stand for the temperature in Kelvin?
Yes, T(K) represents the temperature in Kelvin. In the expression 1/((T)x(K)), T(K) refers to the temperature in Kelvin.
4. Is it correct that k would be the same for all three temperatures?
No, the rate constant (k) generally changes with temperature. As the temperature increases, the rate constant usually increases as well. Therefore, the rate constant is not expected to be the same at different temperatures.
Regarding the chart you need to fill in, to calculate the rate constant at each temperature, you will need to use the observed rate, concentration values, and the orders of the reaction as given in part C. Substitute these values into the appropriate equations given in your problem's instructions. The lnk can be obtained by taking the natural logarithm of the rate constant (k).
I hope this helps in clarifying some of your doubts. Feel free to ask if you have any further questions!
Based on the information provided, I can help clarify your questions. Let's go through each question one by one.
1. Is the rate the time I observed above... 150 sec, 32 sec, and 143 sec?
No, the rate is not the time observed. The rate refers to the rate of the chemical reaction, which is a measure of how quickly the reactants are being converted into products. The rate is usually expressed in terms of the change in concentration of a reactant or product per unit time. In the given information, the rate constant (k) is provided, not the rate.
2. Is k the same k for I in part C?
Yes, k refers to the rate constant. In part C, you calculated the rate constant (k) for each mixture using the given orders, initial concentrations, and observed rates. The values you obtained for k in part C are specific to each mixture, so k for mixture I would be the same value you calculated in part C.
3. Does T(K) in 1/((T)x(K)) just stand for the temperature in Kelvin?
Yes, T(K) in the expression 1/((T)x(K)) refers to the temperature in Kelvin. The temperature must be expressed in Kelvin when dealing with rate constants because the rate constant depends on temperature, and Kelvin is the standard unit for temperature in scientific calculations.
4. Is it correct that k would be the same for all three temperatures?
No, the rate constant (k) generally varies with temperature. In this case, the question asks you to calculate the rate constant at each temperature using the procedure in part C. You should use the given values of orders, initial concentrations, and observed rates for reaction mixture I to calculate the rate constant (k) at each temperature (10°C, 40°C, and room temperature). The calculated values of k might be different at each temperature.
I hope this clarifies your questions. If you have any further doubts, feel free to ask!