Some Basic Principles Of Organic Chemistry Question 146
Question: A hydrocarbon contains 10.5 gm carbon and 1gm hydrogen. Its 2.4 gm has 1 litre volume at 1 atm and $ 127^{o}C $ , hydrocarbon is [UPSEAT 2003]
Options:
A) $ C_6H_7 $
B) $ C_6H_8 $
C) $ C_5H_6 $
D) None of these
Show Answer
Answer:
Correct Answer: A
Solution:
$ C=10.5gm=\frac{10.5}{12}mol=0.87mol $
$ H=1gm=\frac{1}{1}=1mol $
$ \therefore ,{{({C _{0.87}}H_1)}_7}={C _{6.09}}H_7\approx C_6H_7 $
$ PV=nRT $ ; $ PV=\frac{w}{m}RT $
$ 1\times 1=\frac{2.4}{m}\times 0.082\times 400 $
$ m=2.4\times 0.082\times 400 $
$ =78.42\approx 79 $ .
