Posted by ram i need major help please!!! on .
i need help with this pre lab question:
plse help me!
teh following data were obained for the reaction
2ClO2(aq)+ 2OH^(aq) > ClO3^(aq) + ClO2^(aq) +H2O (l)
Where rate = delta[ClO2]/ delta t
(mol/L) (mol/L) (mol/L*s)
[ClO2]0 [OH]0 Initial rate
0.0500 0.100 5.75*10^2
0.100 0.100 2.30*10^1
0.100 0.050 1.15*10^1
a) determine the rate law and the value of the rate constant
b) what would be the initial rate for an eperiment with [ClO2]0= 0.175 mol/L and the [OH]0=0.0844 mol/L

CHEMISTRY 
ram i need major help please!!!,
sorry i tired to make it a chart bbut it did not work the 3 numbers in order for each concenraion is as follows
[ClO2]0
0.500
0.100
0.100
and then
[oh]
o.100
0.100
0.050
Initial rate
5.75* 10^2
2.30* 10^1
1.15* 10^1 
CHEMISTRY 
DrBob222,
Here is how you do part a. That should get you started.
rate = k*(ClO2)^x*(OH^)^y so substitute run 1 and run 2 into this.
r1 = 5.75 x 10^2=k*(0.050)^x*(0.100)^y
r2 = 2.30 x 10^1=k*(0.100)^x*(0.100)^y
Now divide equation for r1 by equation for r2 and solve for x, the only unknown in the equation. I obtain x = 2 
CHEMISTRY 
DrBob222,
I can read the chart you posted. If determining x, you do the same kind of thing to determine y 9but make sure the value for x cancels; i.e., you want to use run 2 and run 3. After determining x and y, then you can take any of the runs, substitute the values for concn in those runs along with the values for x and y and determine k, the rate law constant. For part b, simply plug in the values in the part b problem, plug in k just determined in part a, and solve for the rate.