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Main classes of hydrocarbons based on structure
Open-chain and Closed-chain
Distinguishing feature of unsaturated hydrocarbons
Presence of double or triple bonds
Saturated hydrocarbons
Alkanes
Bonds characteristic of unsaturated hydrocarbons
Pi bonds
Hydrocarbons inert towards HCl and H2SO4 at room temp.
Saturated hydrocarbons
Purpose of Baeyer's test
Detecting the presence of unsaturated hydrocarbons
Change in color of permanganate solution with unsaturated hydrocarbons
Decolorizes
Type of hydrocarbon that reacts by substitution under rigorous conditions
alkanes
Characteristic reactions of unsaturated hydrocarbons
Addition reactions
Bonds found in saturated hydrocarbons
Sigma bonds
Not a characteristic reaction of unsaturated hydrocarbons
Substitution
Hydrocarbon class with benzene rings
Aromatics
Product of Baeyer's test when unsaturated hydrocarbons react with permanganate
MnO2
Alkenes and alkynes
Unsaturated hydrocarbons
The reaction type involved in the breaking of pi bond in unsaturated hydrocarbons
Addition
Bonds contributing to conjugative stability in aromatic compounds
Pi bonds
Reaction that aromatic compounds primarily undergo
Electrophilic aromatic substitution
Property of the ring system preserved in aromatic substitution reactions
Resonance
Mechanism in aromatic substitution of an electrophile
Two steps
Reactions aromatic compounds resist due to the risk of destroying the ring system
Electrophilic addition
Position of substitution in bromination of acetanilide due to steric inhibition
Para
What type of director is the Amide group in benzene ring of acetanilide during bromination
Activating, ortho-para director
Substitution illustrated in bromination of acetanilide
Electrophilic substitution
Purpose of the ignition test
To identify the flammability of hydrocarbons
Luminous flame in the ignition test indicates
Presence of impurities in the hydrocarbon
Placing a dry evaporating dish over the flame during the ignition test
To collect soot formed during combustion
Hydrocarbon used in place of benzene during the ignition test
n-Hexane
Repeating the ignition test with different hydrocarbons
To compare the flammability of different hydrocarbons
Purpose of adding NaOH to KMnO4 solution in Baeyer's Test
To make the solution alkaline
Purpose of setting aside 1 mL of the prepared KMnO4 solution as standard in Baeyer's Test
To serve as a control sample
Color indicating a positive result for unsaturation in Baeyer's Test
Brown
Precaution advised while performing Baeyer's Test
Perform the test in a hood
Role of glacial acetic acid in Electrophilic Aromatic Substitution
Solvent
Amount of bromine in acetic acid solution added in Electrophilic Aromatic Substitution
0.76 mL
Purpose of stirring the solution for 3 minutes more in Electrophilic Aromatic Substitution
To accelerate the reaction
Positive result in Electrophilic Aromatic Substitution using acetanilide
Solution turning cloudy
Compound used instead of acetanilide in repeated steps a-c of Electrophilic Aromatic Substitution
Naphthalene
Step in Electrophilic Aromatic Substitution performed using the hood
Adding bromine in acetic acid solution
Note 
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