Chapter 12: Problem Set A\ Suppose that chemicals

A

and

B

react together to produce chemicals

C

and

D

according to the balanced equation below:\

2A+5B->3C+D

\ a. 20.0 seconds after a reaction has begun,

[A]=0.650

M. At 75.0 seconds after the reaction began,

[A]=0.233M

. Find the average reaction rate for

A

for this time period.\ b. At a certain point in time, the rate of change of

C

is

0.0145(M)/(s)

. Find the rate of change in the concentration of

B

and

D

at this same point in time.

1. Suppose that chemicals A and B react together to produce chemicals C and D according to the balanced equation below: 2A+5B3C+D a. 20.0 seconds after a reaction has begun, [A]=0.650M. At 75.0 seconds after the reaction began, [A]=0.233M. Find the average reaction rate for A for this time period. b. At a certain point in time, the rate of change of [C] is 0.0145M/s. Find the rate of change in the concentration of B and D at this same point in time