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EAMCET Engineering 2001 Solved Paper
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© examsnet.com
Question : 100
Total: 200
How many litres of oxygen (at STP) are required for complete combustion of
39
g
of liquid benzene?
(Atomic weights:
C
=
12
,
O
=
16
,
H
=
1
)
84
22.4
42
11.2
Validate
Solution:
C
6
H
6
+
7
1
2
O
2
→
6
CO
2
+
3
H
2
O
78
g
7.5
×
22.4
L
Volume of
O
2
required for
78
g
of
C
6
H
6
=
7.5
×
22.4
L
Volume of
O
2
required for
39
g
of
C
6
H
6
=
7.5
×
22.4
×
39
78
=
84
L
© examsnet.com
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