Current Electricity and Electrical InstrumentHard
Question
A gaseous hydrocarbon gives upon combustion 0.72 g of water and 3.08 g of CO2.The empirical formula of the hydrocarbon is
Options
A.C2H4
B.C3H4
C.C6H5
D.C7H8
Solution
moles of
= 0.04moles of
= 0.07∴
= 0.07 :0.04⇒ x : y = 0.07 : 0.08 ⇒ 7 : 8
Ratio of C & H is x : y
∴ C : H = 7 : 8
Therefore empirical formula of hydrocarbon should be C7H8.
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