[samiam]

A reaction has a very low activation energy if...
A) rate it not sensitive to temp
B) Rate is greatly sensitive to temp


I know rate of reaction increases non linearly with temperature due to the activation energy.
and arhenius equation is Logk=LogA-EA/2.303RT
If we solve for Ea it looks like activation energy increases with temp
so the answer is rate of reaction is not sensitive to temperature?
Am I wrong

[TheUnfocusedOne]

Well Arrehnius equation gives you more of an empirical feel of how the rate of reactions vary with temperature.  I think you're missing the point of the problem.

If Ea>>T, then how much will a small change in T make?
If Ea~T, how much will a small change in T make?

[narutodemonkill]

according to the equation activation energy increases with temperature?
increasing temperature brings a reaction closer to its activation energy(imput energy)


two contradicting thoughts..not sure

[Borek]

If Ea>>T, then how much will a small change in T make?
If Ea~T, how much will a small change in T make?

I guess I know what you mean, but comparing energy and temperature makes about as much sense, as comparing mass and length. I am longer than heavier, and you?

[Borek]

according to the equation activation energy increases with temperature?

For most practical purposes you may assume activation energy is temperature independent.

[TheUnfocusedOne]

I guess I know what you mean, but comparing energy and temperature makes about as much sense, as comparing mass and length. I am longer than heavier, and you?

Well no, I guess I might of written it wrong then. What I'm trying to get across is if a reaction's activation energy is very large, how much will a small change in temperature effect the rate of reaction?  What about when the activation energy is small?

I'm trying to think of creative ways of giving ideas how to solve without actually giving away the problem. I'm new to this whole internet tutoring thing so cut me some slack  .

[samiam]

OK, Low activation energy, because rate is very sensitive to temperature so the temp input decreases EA
is this the answer.

I guess I know what you mean, but comparing energy and temperature makes about as much sense, as comparing mass and length. I am longer than heavier, and you?

Well no, I guess I might of written it wrong then. What I'm trying to get across is if a reaction's activation energy is very large, how much will a small change in temperature effect the rate of reaction?  What about when the activation energy is small?

I'm trying to think of creative ways of giving ideas how to solve without actually giving away the problem. I'm new to this whole internet tutoring thing so cut me some slack  .

[Borek]

because rate is very sensitive to temperature so the temp input decreases EA

No, you were told EA is temperature independent.

It is not EA that changes, but its ratio to RT.