Question:
Empirical formula of a hydrocarbon containing 80% carbon and 20% hydrogen is:
Empirical formula of a hydrocarbon containing 80% carbon and 20% hydrogen is:
Updated On: Jul 12, 2022
- $ CH $
- $ C{{H}_{2}} $
- $ C{{H}_{3}} $
- $ C{{H}_{4}} $
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The Correct Option is C
Solution and Explanation
Element
%
Atomic weight
Percentage at weight
Simple ratio
C
80
12
$ \frac{80}{12}=6.67 $
$ \frac{6.67}{6.67}=1 $
H
20
1
$ \frac{20}{1}=20.0 $
$ \frac{20.0}{6.67}=3 $
Hence, empirical formula of hydrocarbon $ =C{{H}_{3}} $ .
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Concepts Used:
Organic Chemistry – Some Basic Principles and Techniques - Reaction Mechanism
SN1 Reaction Mechanism:
SN1 reaction mechanism takes place by following three steps –
- Formation of carbocation
- Attack of nucleophile
- Deprotonation
SN2 Reaction Mechanism:
The SN2 reaction mechanism involves the nucleophilic substitution reaction of the leaving group (which generally consists of halide groups or other electron-withdrawing groups) with a nucleophile in a given organic compound.
Electrophilic Aromatic Substitution Reaction Mechanism:
The mechanism of an electrophilic aromatic substitution reaction contains three main components which are:
- A new sigma bond from C=C is formed during the reaction in the arene nucleophile.
- Due to the breaking of the C-H sigma bond, a proton is removed.
- The C=C bond is reformed and it restores the aromaticity of the compound.
Electrophilic Substitution Reaction Mechanism:
The electrophilic substitution reaction mechanism is composed of three steps, which will be discussed more below.
- Electrophile Generation
- Carbocation Formation
- Proton Removal