Thread: Rate of Reaction

Experiments show that if the chemical reaction
N2O5 --> 2NO2 + 1/2 O2
takes place at 45 C, the rate of reaction of dinitrogen pentoxide is proportional to its concentration as follows:
-d[N2O5]/dt=0.0002[N2O5]
How long will the reaction take to reduce the concentration of [N2O5] to 90% of its original value?

Originally Posted by asnxbbyx113

Experiments show that if the chemical reaction
N2O5 --> 2NO2 + 1/2 O2
takes place at 45 C, the rate of reaction of dinitrogen pentoxide is proportional to its concentration as follows:
-d[N2O5]/dt=0.0002[N2O5]
How long will the reaction take to reduce the concentration of [N2O5] to 90% of its original value?

ok. whenever i see chemistry, my brain freezes up, so don't take this answer too seriously.











is the initial concentration of . We want the time when we have 90% of this concentration.

So, we want:





Now we solve for and that should be your answer