Compare 1 & 2...than 2 & 3...and finally 3 & 4.
[CH3COCH3] = A
[H+] = B
[I2] = C
Compare 1 & 2-
A & C- remains the same
B- 2 x bigger
Rate- 2 x bigger
Order of reaction of B = 1st order
Compare 2 & 3-
B & C - remains the same
A- 1.2 x bigger
Rate- 1.2 x bigger
Order of reaction of A = 1st order
You already know that if you double
B the rate of reaction also doubles. Now when you compare 3 & 4 you’ll see that B is halved and the rate of reaction also decreased by half. This means that the concentration of iodine did not affect the rate of reaction.
Order of reaction of C= 0 …