how to solve this problem
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Answer:
D is the correct option
Explanation:
Correct option is D)
The mole fractions of liquids A and B re 0.5 and 0.5 respectively. The total pressure is 1 atmosphere.
Hence,
2
P
A
0
+
2
P
B
0
=1 atm
P
A
o
+P
B
o
=2 atm
In another mixture, the mole fractions of liquids A and B re 0.25 and 0.75 respectively. The total pressure is more than 1 atmosphere.
4
P
A
0
+
4
3P
B
0
>1 atm
P
A
o
+3P
B
o
>4 atm
In the third mixture, the mole fractions of liquids A, B and C are
8
1
,
8
3
and
8
4
respectively.
8
P
A
0
+
8
3P
B
0
+
8
4P
C
0
=1atm
P
A
o
+3P
B
o
+4P
C
o
=8 atm
Hence, P
A
o
+3P
B
o
=(8−4×0.8)atm=4.8 atm
P
B
o
=1.4 atm
P
A
o
=2−1.4=0.6 atm
Hence, the correct option is D
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