L14+15 - Reaction Kinetics

Question 1

Finding order of reaction:
Method 1:

Method 2:

Answer 1

Method 1:
Vary conc of A and measure Vo. Initial rate is measured by working out gradient.

Method 2:
Plot three different graphs.

[A] vs t. If it gives -K slope, then 0 order.
ln[A] vs t. If it gives -K slope, then 1st order.
1/[A] vs t. If it gives K slope, then 2nd order.

If u plot same data for all three graphs, one should be fairly straight and this shows order of reaction.