Question

A reaction is found to have an activation energy of 38.0 kJ/mol. If the rate constant...

A reaction is found to have an activation energy of 38.0 kJ/mol. If the rate constant for this reaction is 1.60

Science   Chemistry   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

1Joule------------ 0,00987Latm

-38000Jolue-----X= -375,06Latm

Arrhenius Equation its

K= Ae(-Ea/RT)

where: K: rate constant, A: colision factor, Ea: activation energy, R: ideal gases constant, T: temperature

1,60*10^2 1/Ms= Ae(-375,06Latm/mole/0,082Latm/Kmole* 249K)

A= 1,60*10^2 1/Ms/ e(-375,06Latm/mole/0,082latm/Kmole* 249K)

A= 1,60*10^2 1/Ms/ e (-18.37)

A= 1,60*10^2 1/Ms /1,05*10-8

A= 1,52*10^10 1/Ms

To the second temperature the Ea and A will be the same so we can calculate K

K= 1,52*10^10 1/Ms* e(-375,06Latm/0,082Latm/Kmole*436K)

K= 1,52*10^10 1/Ms* 2,78*10-5

K=4,23*10^5 1/Ms

The closest answer is the 3th 4,20*10^5M-1s-1 the difference its probably because to the significant number taken into account.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The activation energy, Ea for a particular reaction is 13.6 kj/mol. If the rate constant at...
The activation energy, Ea for a particular reaction is 13.6 kj/mol. If the rate constant at 754 degrees celsius is 24.5/min at egat temperature in celsius will the rate constant be 12.7/min? r= 8.314j/mol • K
A)The activation energy of a certain reaction is 33.8 kJ/mol . At 30  ∘C , the rate...
A)The activation energy of a certain reaction is 33.8 kJ/mol . At 30  ∘C , the rate constant is 0.0170s−1. At what temperature in degrees Celsius would this reaction go twice as fast? B)Given that the initial rate constant is 0.0170s−1 at an initial temperature of 30 ∘C , what would the rate constant be at a temperature of 200. ∘C for the same reaction described in Part A?
The activation energy for a reaction is changed from 184 kJ/mol to 59.5 kJ/mol at 600....
The activation energy for a reaction is changed from 184 kJ/mol to 59.5 kJ/mol at 600. K by the introduction of a catalyst. If the uncatalyzed reaction takes about 2627 years to occur, about how long will the catalyzed reaction take? Assume the frequency factor A is constant and assume the initial concentrations are the same.
The activation energy of a certain reaction is 35.1 kJ/mol . At 25 ∘C , the...
The activation energy of a certain reaction is 35.1 kJ/mol . At 25 ∘C , the rate constant is 0.0160s−1. At what temperature in degrees Celsius would this reaction go twice as fast? Given that the initial rate constant is 0.0160s−1 at an initial temperature of 25  ∘C , what would the rate constant be at a temperature of 200.  ∘C for the same reaction described in Part A?
1.) The reaction C4H8(g)⟶2C2H4(g) has an activation energy of 262 kJ/mol. At 600.0 K the rate...
1.) The reaction C4H8(g)⟶2C2H4(g) has an activation energy of 262 kJ/mol. At 600.0 K the rate constant is 6.1×10−8 s−1. What is the value of the rate constant at 860.0 K? ?=_____ s−1 2.) A certain reaction has an activation energy of 47.01 kJ/mol. At what Kelvin temperature will the reaction proceed 7.50 times faster than it did at 357 K? ____ K 3.) Consider this reaction data. A⟶products T (K) k (s–1) 275 0.383 875 0.659 If you were...
a.)A certain reaction has an activation energy of 25.10 kJ/mol. At what Kelvin temperature will the...
a.)A certain reaction has an activation energy of 25.10 kJ/mol. At what Kelvin temperature will the reaction proceed 7.00 times faster than it did at 289 K? b.A certain reaction has an enthalpy of ΔH = 39 kJ and an activation energy of Ea = 51 kJ. What is the activation energy of the reverse reaction? c.)At a given temperature, the elementary reaction A<=> B in the forward direction is the first order in A with a rate constant of...
A reaction proceeds with ∆ H = -80 kJ/mol. The energy of activation of the uncatalyzed...
A reaction proceeds with ∆ H = -80 kJ/mol. The energy of activation of the uncatalyzed reaction is 80 kJ/mol, whereas it is 55 kJ/mol for the catalyzed reaction. How many times faster is the catalyzed reaction than the uncatalyzed reaction at 25°C?
A certain reaction has an activation energy of 66.0 kJ/mol and a frequency factor of A1...
A certain reaction has an activation energy of 66.0 kJ/mol and a frequency factor of A1 = 8.30×1012 M−1s−1 . What is the rate constant, k, of this reaction at 27.0 ∘C ? An unknown reaction was observed, and the following data were collected: T (K) k (M−1⋅s−1) 352 109 426 185 Determine the activation energy for this reaction.
the following reaction has an activation energy of 262 kJ/mol. C4H8(g)->2C2H4(g). At 600 K the rate...
the following reaction has an activation energy of 262 kJ/mol. C4H8(g)->2C2H4(g). At 600 K the rate constant is 6.1*10^-8s^-1. What is the value of the rate constant at 765.0 K?
The activation energy of a reaction is 55.6 kJ/mol and the frequency factor is 1.5×1011/s. Calculate...
The activation energy of a reaction is 55.6 kJ/mol and the frequency factor is 1.5×1011/s. Calculate the rate constant of the reaction at 23 ∘C. Express your answer using two significant figures.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT