Acoil visbreaker operates at 500°c for 1 min. how long will it take to achieve the same thermal severity at 450°c in a soaker visbreaking process? an apparent arrhenius activation energy for thermal cracking is given as 50 kcal/mol. show each step of calculations in your answer.

Time taken is 9.468 min

Solution:

As per the question:

Temperature, = 273 + 500 = 773 K

Temperature, = 273 + 450 = 723 K

Activation energy,

Time, t = 1 min

Now,

To calculate the time, at

We know that:

Thus

Now, arranging the Arrhenius eqn in terms of time:

Taking anti log

more than, less

less than, more

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me