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Arrhenius equation question -finding Ea

Calculate the reaction barrier for a zero order reaction, carried out at 25 C, given that the pre-exponential factor is 1013 s-1 and the rate of reaction is 6.8 x 10-8 mol L-1 s-1 (R=8.314 J mol-1 K-1).

how do you find rate constant from this?

Reply 1

langlitz

Original post by OHNOGEM

It's a zero order reaction so

rate = k

Reply 2

OHNOGEM

Original post by langlitz

It's a zero order reaction so

rate = k

Thanks! that was my guess but I have no idea why, do you know the explanation for this per chance?

Reply 3

charco

Study Forum Helper

Original post by OHNOGEM

Thanks! that was my guess but I have no idea why, do you know the explanation for this per chance?

Because any factor raised to the power of zero becomes one.

Rate = k[A]⁰

and as [A]⁰ = 1

Then

Rate = k

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