victoriay3
21.02.2020 •
Chemistry
As discussed in the text, the total system pressure can be used to monitor the progress of a chemical reaction. Consider the following reaction: SO2Cl2(g)→SO2(g)+Cl2(g). The reaction is initiated, and the following data are obtained:
Time (h) 0 3 6 9 12 15
PTotal (kPa) 11.07 14.79 17.26 18.90 19.99 20.71
Is the reaction first or second order with respect to SO2Cl2?
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Ответ:
The relation is linear between and time as given in the graph attached thus the reaction is first order wrt .
Explanation:
As the reaction is given as
This indicates that 1 mole of dissociates into exactly one mole of and .
By indicating the degree of dissociation as ζ and solving for the pressure gives
Now by calculation of degree of dissociation ζ and thus pressure of is that calculated as
For the data given the calculation is as below
tP(total)Dissociation(ζ)P(SO2CL2)ln(P(SO2CL2))
P(total)-11.07 11.07-ζ
0 11.07 0 11.07 2.4042
3 14.79 3.72 7.35 1.9947
6 17.26 6.19 4.88 1.5851
9 18.9 7.83 3.24 1.1756
12 19.99 8.92 2.15 0.7655
15 20.71 9.64 1.43 0.3577
For the estimation of the degree the relation between vs time is to be plotted, if the relation is linear it is a first order reaction, if the relation is not linear than it is a higher order reaction. The relation is linear as given in the graph attached thus the reaction is first order wrt SO2Cl2.
Ответ:
All samples of a substance have different physical properties. Hardness, color and boiling point are physical properties because they can all be observed and/or measured without manipulating the composition of the substance.
Explanation: