A mixture of CS2
and H S2
when oxidised, yields a mixture of CO2
, 2
SO and H O g 2 ( ), which exerts
a pressure of 748.8mm of Hg when collected in 60L vessel at 327 °C . To oxidise 2
SO in the mixture,
700ml of 2N. Iodine were required. What was the mole fraction of CS2
in the mixture ?
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Answer:
According to question ,
CS
2
+3O
2
→CO
2
+2SO
2
__________(1)
2H
2
S+3O
2
→2H
2
O+2SO
2
____________(2)
Total moles of gases SO
2
,CO
2
and H
2
O exerted.
pressure,
n=
RT
PV
=
0.0821×600
7.2×82.1
n=
49.26
591.12
= 12 moles.
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