[Twickel]

Hello,
I have the following siomerisation reaction

A ::equil::B
So this is first order in both directions. The rate constant for A :rarrow:B is ka and for B :rarrow:A iskb.

What would happen to the overall rate of the isomerisation if I double the concentration of the species and more importantly what would happen to the rate constants k. I don't think the rate constants will change because they are dependant on the arrhenius equation.

But I am not sure tt effect of changing concentration o the overall reaction rate.

Thanks

[Corribus]

if I double the concentration of the species

A vague question. Double the concentration of what species? Both? One or the other.
How do you write a rate law for this kind of reaction?

[Twickel]

Perhaps the full question will help?

Transfer RNA (tRNA) can exist in two forms that are in rapid equilibrium with each other; the
equilibrium constant at 28􀁱C, K = eq/[A]eq = 10. A temperature jump experiment is conducted to
measure the rates of interconversion. A solution of tRNA at a concentration of 10 􀁐M is quickly
(faster than 10 􀁐s) raised in temperature from 25ºC to 28ºC. An experimental signal is measured
with a relaxation time, 􀁗 = 3 ms. Assume that the mechanism is:
k1
A 􀖖 B
k-1


Would you expect doubling the concentration of tRNA to increase, decrease or leave
unchanged the values of 􀁗, k1 and k-1? Explain your answer.

For tao won't change but maybe k1 and k-1 will?

Is the rate law. Rate= -d[A]/dt?

[Corribus]

Please correct the formatting of your question. As it is, it's hard to understand what you're asking.