Some Basic Concepts of Chemistry - Result Question 3

####3. At 300K and 1 atmospheric pressure,

10mL of a hydrocarbon required 55mL of O2 for complete combustion and 40mL of CO2 is formed. The formula of the hydrocarbon is

(2019 Main, 10 April I)

(a) C4H7Cl

(b) C4H6

(c) C4H10

(d) C4H8

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Solution:

  1. In eudiometry,

Given, (i) VCO2=10x=40mLx=4

(ii) VO2=10(x+y4)mL=55mL

10(4+y4)=55 40+y×104=55 y×104=15y=15×410=6

So, the hydrocarbon (CxHy) is C4H6.



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