Homework Help: Chemistry

Posted by Mitch on Saturday, May 1, 2010 at 1:49am.

Suppose a compound is involved in three
different reactions denoted R1, R2, and R3.
Tripling the concentration of this reactant in
all three reactions causes the rates of reaction
to increase by factors of 3, 9, and 1, respec-
tively. What is the order of each reaction with
respect to this reactant?
>>> I'm trying to make a guess because I don't understand. My guess is 1, 2, 0.

Chemistry - DrBob222, Saturday, May 1, 2010 at 12:09pm
I think you are correct. For the first one,
R1 = k(A)^x but we can ignore k since it will be a constant.
logR1 = x*log(A)
If A is tripled, then R1 is 3R1
log 3 = x*log 3
0.477 = x*0.477 and
x = 1 so that is first order.

If A is tripled, then R1 = 9R1
log 9 = x*log 9
0.954 = x*0.477
x = 0.954/0.477 = 2 or second order.

If A is tripled, then R1 = 1*R1
log 1 = x*log3
0 = x*0.477
x = 0/0.477 = 0 = zero order.

Answer this Question

Related Questions

physics-series and parellel circuits - I'll try to explain the schmatic ...
physics - Resistors R1, R2, and R3 have resistances of 15.0 Ohms, 9.0 Ohms and 8...
physics - the region 0 < r < r1 is a charged insulating sphere ...
Database - 22. Which one of the following schedules has a conflict? A) Sa: r1(X...
Math - Suppose that a=(rn x rn-1 ... r2 x r1 x r0) 10^3. This notation means ...
chemistry - were doing an experiment. and i did the calculation for r3/r2 and r2...
chemistry - were doing an experiment. and i did the calculation for r3/r2 and r2...
physics - I'm confused as how to find the current for a circuit with both ...
voltage drop - 12v r1=10 r2=15 r3=2 r3=18 how would one solve this
Physics-Please help - R1= 10 ohm R2= 20 ohm R3= 50 ohm R4= ??? R1, R2, R3 and R4...

For Further Reading

First Name:
School Subject:
Answer: