Chemistry Of Hydrocarbons Flashcards
Inhibitor and Facilitator in Free Radical Substitution of Alkanes.
Gas Phase Inhibitor - O² (radical trap)
Liquid Phase Facilitator - Peroxides
Temperature required for dehydration of Alcohals with Al²O³
340 - 450 °C
Concentration and Temperature of H²SO⁴ for Dehydration of different alcohals.
Tertiary- 20% 85°C
Secondary- 60% 100°C
Primary- 75% 140-170°C
Colour of Bromine Solution and Baeyer’s Reagent
Bromine Water - Reddish Brown
Baeyer’s Reagent - Pink
Addition of 10% H²SO⁴ to an alkene results in formation of…
Corresponding Alcohal Directly
Addition of Oxygen Atom to Alkene takes place in presence of ___ at ___°C and results in formation of ___
Ag²O, 300°C, Ethylene Epoxide
Epoxides serve as starting compounds for industrial manufacturing of ____.
Glycols
Temperature, Pressure and Catalysts used in the polymerization of ethene.
400°C
100atm
Aluminium Tri-ethyl, Titanium Tetrachloride, 0.1% O²
C-C bond length in Alkanes, Alkenes and Alkynes respectively…
Alkanes - 1.54 A
Alkenes - 1.34 A
Alkynes - 1.20 A
Alkanes, Alkenes and Alkynes are gases and liquids between which Carbon Numbers…
1C/2C to 4C (gases for all three)
5C to 17C/15C and 12C (Gases respectively)
In dehydrohalogenation of Vicinal Dihalides, removal of first and second HX takes place at what temperatures respectively…
1st. - 80°C
2nd - 150°C
Hydration of Alkynes to form Vinyl Alcohal takes place at what temperature and in presence of which catalysts…
75°C
1%HgSO⁴, 20%H²SO⁴
Expected and Actual Hydrogenation energy for the three compounds (yk)…
-119.5, -119.5
-239, -231.5
-358.5, -208
Length of C-C and C-H bond in Benzene.
C-C 1.397 A
C-H 1.09 A
Nitration of Benzene takes place at what temperature…
50-55°C
Bond Energies of Cl-Cl and C-H
Cl-Cl ∆H=242 KJ/mol
C-H ∆H=435 KJ/mol
Electronegativity of C and H respectively.
C ≈ 2.5
H ≈ 2.1
Heat of Combustion of Methane
∆H= -891KJ/mol
Reagents for Clemenson and Wolf-Kishner Reactions respectively….
Clemenson - Zn-Hg and HCl (Zn Amalgam)
Wolf Kishner - N²H⁴ KOH at 200°C
Colour of Baeyer’s Reagent.
Pink
Colour of di-silver and di-copper acetylides.
Di-Silver Acetylide : White ppt.
Di-Copper Acetylide : Reddish Brown ppt.
Two instances of benzene’s discovery.
Micheal Faraday
(Destructive Distillation of Veg. Oil)
Hoffman
(Isolated from Coal tar)
Expected and Resonance energies of the three Cyclo Compounds.
-119.5 : 0
-239 : 7.5
-358.5 : 150.5
Benzene was discovered by Micheal Faraday and later by Hoffman by…
1: Destructive Distillation of Veg. Oil
2: Isolation from Coal tar
