Chemistry, 21.02.2020 00:00 ylianafghgfdsnm1479
The iodide ion reacts with hypochlorite ion (the active ingredient in chlorine bleaches) in the following way:
OCl−+I−→OI−+Cl−.
This rapid reaction gives the following rate data:
[OCl−](M) [I]−(M) Rate (M/s)
1.5×10^−3 1.5×10^−3 1.36×10^−4
3.0×10^−3 1.5×10^−3 2.72×10^−4
1.5×10^−3 3.0×10^−3 2.72×10^−4
a. Write the rate law for this reaction.
b. Calculate the rate constant with proper units.
c. Calculate the rate when [OCl-]= 1.8×10^3 M and [I-]= 6.0×10^4 M .
Answers: 3
![R=k[OCl^-]^1\times [I^-]^1](/tpl/images/0518/3250/d583c.png)
.
.
![R=k[OCl^-]^x\times [I^-]^y](/tpl/images/0518/3250/04fdb.png)
![[OCl^-]=1.5\times 10^{-3} M](/tpl/images/0518/3250/b77da.png)
and ![[I^-]=1.5\times 10^{-3} M](/tpl/images/0518/3250/2f2e0.png)
.![1.36\times 10^{-4} M/s=k[1.5\times 10^{-3} M]^x\times [1.5\times 10^{-3} M]^y](/tpl/images/0518/3250/e45d8.png)
..[1]![[OCl^-]=3.0\times 10^{-3} M](/tpl/images/0518/3250/3317d.png)
and ![2.72\times 10^{-4}M/s=k[3.0\times 10^{-3} M]^x\times [1.5\times 10^{-3} M]^y](/tpl/images/0518/3250/dea0f.png)
..[2]![[I^-]=3.0\times 10^{-3} M](/tpl/images/0518/3250/b24ad.png)
.![2.72\times 10^{-4} M/s=k[1.5\times 10^{-3} M]^x\times [3.0\times 10^{-3} M]^y](/tpl/images/0518/3250/22116.png)
..[3]![\frac{1.36\times 10^{-4}M/s}{2.72\times 10^{-4}M/s}=\frac{k[1.5\times 10^{-3} M]^x\times [1.5\times 10^{-3} M]^y}{k[3.0\times 10^{-3} M]^x\times [1.5\times 10^{-3} M]^y}](/tpl/images/0518/3250/ebd3d.png)
![\frac{1.36\times 10^{-4} M/s}{2.72\times 10^{-4} M/s}=\frac{k[1.5\times 10^{-3} M]^x\times [1.5\times 10^{-3} M]^y}{k[1.5\times 10^{-3} M]^x\times [3.0\times 10^{-3} M]^y}](/tpl/images/0518/3250/11fc2.png)
![1.36\times 10^{-4} M/s=k[1.5\times 10^{-3} M]\times [1.5\times 10^{-3} M]](/tpl/images/0518/3250/f3ed7.png)
![k=\frac{1.36\times 10^{-4} M/s}{[1.5\times 10^{-3} M]\times [1.5\times 10^{-3} M]}=60.44 M^{-1}s^{-1}](/tpl/images/0518/3250/1ed07.png)
![[OCl^-]=1.8\times 10^{3} M](/tpl/images/0518/3250/b9482.png)
and ![[I^-]=6.0\times 10^{4} M](/tpl/images/0518/3250/ceced.png)
be R.![R=60.44 M^{-1}s^{-1}\times [1.8\times 10^{3} M]^1\times [6.0\times 10^{4} M]^1](/tpl/images/0518/3250/1384b.png)
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The iodide ion reacts with hypochlorite ion (the active ingredient in chlorine bleaches) in the foll...
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