00:01
Hello students in this question we have given a reaction that is ch3 br plus n a -o -h it gives out ch3 -o -h plus n -a -br so rate of reaction that is r is equals to k multiplied ch3br multiplied n -a -o -h now in part a a we have given when concentration of ch3 br is doubled, then the rate of reaction will affect.
00:43
If this is get doubled, then rate is equal to 2 multiplied 0 .009, that is 0 .018.
00:57
Or we can say that r is equal to k 2 c h 3 b r n a o h is equal to 2 k c h 3 br n a o h if this is r 1 and this is r 2 we can say that r2 is equal to 2 of r1.
01:26
That is, answer is 0 .118.
01:31
In part b, we have say that when n -a -o -h is haveld, heveled means concentration is half.
01:41
Then r3 is equal to k, c -h -3, br, n -a -o -h divided by 2, which is equals to r3k divided by 2, ch3, brn -o -h.
02:03
Or we can say that r1 divided by 2.
02:08
Hence, r3 is equals to 0 .009 divided by 2, which comes out to be 0 .0045 meter per second...