CH$_3$OH
1. The reaction: C$_2$H$_4$Br$_2$ + 3KI $\longrightarrow$ C$_2$H$_4$ + 2KBr + KI$_3$ was carried out in a 1 L vessel.
The concentrations of the product, [KI$_3$] were measured at various times, $t$ (in minute) in three experiments (Expt.)
of different initial concentrations of the reactants, [C$_2$H$_4$Br$_2$]$_0$ and [KI]$_0$ as given in the table.
[KI$_3$](mol/L)
0.040
Expt. [C$_2$H$_4$Br$_2$]$_0$(mol/L) [KI]$_0$(mol/L)
0.035
I
1
0.05
0.15
0.030
II
II
0.05
0.10
0.025
III
III
0.03
0.10
0.020
0.015
0.010
0.005
0.000
0
10
20
30
40
50
a) Use the graphical data to estimate initial rates of the reaction in the
three experiments.
b) Calculate number of moles of C$_2$H$_4$Br$_2$ and KI at 10.0 min in Expt. I.
c) Calculate the rate constant and determine the rate law for this reaction.
$t$ (min)
