2 replies to this topic

[paul2752]

I am working on a question about rate of reaction;

 

this is how it goes. 

 

You are given concentrations of A at specific time, and you have to find the rate of reaction at each time.

 

The rate of reaction equation is: dc/dt=-0.0773c^n, where c means concentration and t means time in minutes. 

 

I am stuck in how I should find the "n". Simply integrating the given equation keeps giving me n=1, which I don't think is right....

 

Also, when I made a scatter plot of concentration vs time, the graph looked pretty much linear so I am even more confused because that would mean the reaction is zeroth order.   scatter plot.JPG   40.63KB   0 downloads

 

How should I approach to this?

Edited by paul2752, 30 June 2016 - 03:38 AM.

[breizh]

Paul ,

I may be rusty , seems to me that the result of the integration is : C^(1-n) -C(t=0) ^(1-n) =( n-1) *-0.0773 *(t)

t=0 , C(t=0) =0.85

 

Hope this helps

 

Breizh

[paul2752]

I did that, but then it keeps giving me n=1, which i don't think is right as I said earlier