The reaction L -> M is started with 10g of L. After 30 and 90 minutes, 5g and 1.25g of L are left respectively. The order of reaction is
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This is a unimolecular reaction so our rate is
\[r = k[L]^x\]
And what we really want is x, which is the order of reaction.
Also, it appears that ever 30 minutes the concentration halves, so our reaction half-life looks like 30 minutes.
Take a look at the second to last row here:
Because it seems fairly clear that we will have a linear plot by putting t on the x-axis and ln[L] on the y-axis to determine k. |dw:1441186633635:dw| You can see the distance between the points on the y-axis is \(\ln 2\), which is just a linear, constant value you add to each point to get up to the next point, so they're evenly spaced.
@Woodward , so it should be a 1st order reaction. Right?
Yeah, I realized I didn't actually say that but yes it should! XD