Home
Class 12
CHEMISTRY
The percent composition of an organic co...

The percent composition of an organic compound A is, carbon : 85.71% and hydrogen 14.29%. Its vapour density is 14. Consider the following reaction sequence
`A overset(Cl_(2)//(H_(2)O))to B overset((i)KCN//EtOH) underset((ii)H_(3)O^(+))to C `

A

B

`HO-CH_(2)-CH_(2)-CO_(2)H`

C

`HO-CH_(2)-CO_(2)H`

D

`CH_(3)-CH_(2)-CO_(2)H`

Text Solution

Verified by Experts

The correct Answer is:
(b)
Molecular formula weight = ` 2 xx` Vapour density
`= 2 xx 14` C=`85.71% = 85.71/12 = 7.14 , 7.14/7.14 = 1`
`H = 14.29% = 14.29/1 = 14.29, 14.29/7.14=2`
`:. ` Empirical formula `= CH_(2)`
`:.`Empirical formula weight =` 12+2 = 14`
`:.` n = Molecular formula weight/ Empirical formula weight
`=28/14 = 2`
`:.` Molecular formula =` C_(2)H_(4)`
Promotional Banner

Topper's Solved these Questions

  • MOCK TEST 2

    SIA PUBLICATION|Exercise Chemistry|58 Videos

  • ORGANIC CHEMISTRY -I

    SIA PUBLICATION|Exercise MCQ|86 Videos

Similar Questions

Explore conceptually related problems

The percent composition of an organic compound underset_A is carbon : 85.71 % and hydrogen 14.29%. Its vapour density is 14. Consider the following reaction sequence : underset(-) A overset(Cl_2//H_2O)to underset(-)B underset((2)H_3O^(+))overset((1) KCN//EtOH)to underset(-)C Identify underset(-) C

Identify X and Y in the following reaction sequence X overset(Zn)(to) underset(Zn.H_(2)O)overset(O_(3))(To) [CH_(3)]_(2) CO + CH_(2)O

In the following reaction underset(CS_(2))overset(CrO_(2)Cl_(2))rarr X overset(H_(3)overset(o+)(O))rarr Z the compound Z is

What is Y in the following reaction sequence C_(6)H_(5)N_(2)Cl overset(H_(3)PO_(2)//H_(2)O)rarr X underset(Anhy.AlCl_(3))overset(CO.HCl)(rarr)

What is the end product of the following sequence of reactions Acetamide overset(P_2 O_3)to A overset(4(H))to B .

Identify C in the following reaction : C_2 H_2 overset("Chromic acid")to A overset(NH_3)to B underset(-H_2 O)overset(Delta)to C

SIA PUBLICATION-MOLE CONCEPT-MCQ
  1. A carbon compound contains 12.8% Carbon, 2.1% Hydrogen, 85.1% Bromine....

    Text Solution

    |

  2. 3.011 xx 10^(22) atoms of an element weighs 1.15 g. The atomic mass of...

    Text Solution

    |

  3. The most probable speed of O(2) molecules at T(K) is

    Text Solution

    |

  4. According to significant figure convention, the result obtained by add...

    Text Solution

    |

  5. An organic compound haavig C, H and O has 13.13% H, 52.14% C and 34.73...

    Text Solution

    |

  6. KMnO(4) reacts with KI,in basic medium to form I(2) and MnO(2)When 250...

    Text Solution

    |

  7. The oxide of a metal contains 40% of oxygen. The valency of metal is 2...

    Text Solution

    |

  8. Which one of the following is an example of disproportionation reactio...

    Text Solution

    |

  9. Solution ''X'' contains Na(2)CO(3) and NaHCO(3),  20 ml of X when titr...

    Text Solution

    |

  10. One mole of N(2)H(4)¸ loses 10 moles of electrons to form a new compou...

    Text Solution

    |

  11. The experimentally determined molar mass of a non- volatile solute, Ba...

    Text Solution

    |

  12. The number of moles of electrons required to deposite 36 g of Al from ...

    Text Solution

    |

  13. 0.16 g of an organie compound containing sulphur produces 0.233 g of B...

    Text Solution

    |

  14. 19 g of a mixture containing NaHCO(3) and Na(2)CO(3), on complete heat...

    Text Solution

    |

  15. The number of molecules of CO(2) liberated by complete combustion of 0...

    Text Solution

    |

  16. CH(4) diffuses two times faster than a gas X The number of molecules p...

    Text Solution

    |

  17. The percent composition of an organic compound A is, carbon : 85.71% a...

    Text Solution

    |