two molecules of hydrocarbon CxHy on complete combustion gives 8 moles of Co2 and 4 moles of H2O then value of (x + y )/2 will be
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2
Answer:
0.2 mol sample of hydrocarbon, C
X
H
Y
yields after complete combustion with excess O
2
gas, 0.8 mol of CO
2
and 1.0 mol of H
2
O. Hence, the hydrocarbon is :
C4H10
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Answered by
6
Answer:
Answer
The balanced reaction is as follows:
C
X
H
Y
+[X+
4
Y
]O
2
→XCO
2
+
2
Y
H
2
O
0.2 excess 0.2X
2
0.2Y
(Moles before reaction)
Therefore, 0.2X=0.8 and
Y
0.2
=1.0
X=4 and Y=10
Hence, the gas is C
4
H
10
.
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