A particular reactant decomposes with a half-life of 175 s when its initial concentration is 0.375 M. The same reactant decomposes with a half-life of 205 s when its initial concentration is 0.320 M.

What will be the Rate constant?

Question

A particular reactant decomposes with a half-life of 175 s when its initial concentration is 0.375 M. The same reactant decomposes with a half-life of 205 s when its initial concentration is 0.320 M.

What will be the Rate constant?

anonymous · Answer

It's a second order reaction!

jfraser · Answer

You know the order, and you know that the rate will be some change in concentration over time. The half-life info gives you a way to find rate. Use those values to find k.

anonymous · Answer

Nt=Noe^-kt

T1/2=In2/K so i think these are the formulas we ll have to figure out how to go from here

aaronq · Answer

^ thats for a first order, the half life equation for a second order would be:  $$t _{1/2}=\frac{ 1 }{ k[A]_{0} }$$