Answers

2014-06-04T16:39:25+05:30
Volume of one mole gas at NTP = 24L
132ml gives   ------------    0.342g
1ml gives ----------------   0.342/132 g
1L gives -----------------  342/132 g
24 L gives ----------------- 342*24/132 = 62.18g
mole of  carbon = 82.7 / 12 = 6.89
mole of hydrogen = 17.3/1 = 17.3
relative number of atom of each atom :
for C = 6.89/6.89 = 1
for H = 17.3/6.89 = 2.5
empirical formula = C2H5 
empirical formula mass = 2*12 + 5*1 = 29
n*empirical formula mass = molecular formula mass
n*29 = 62.18 
n = 62.18/29 = 2.14 = 2    (we can assume it is equal to 2)
molecular formula = 2*(C2H5)
                           = C4H10 , butane

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