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Formula Sheet

Hydrocarbons — Formula Sheet

ICSE · Class 11 · Chemistry

15 formulas from Hydrocarbons (ICSE Class 11 Chemistry) on one page, grouped by topic. Part of the ICSE Class 11 Chemistry syllabus.

45 questions45 flashcards15 formulas & key relations5 concepts

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An infographic illustrating the main types of hydrocarbons: saturated (alkanes), unsaturated (alkenes, alkynes), and aromatic hydrocarbons, with their general structures and key characteristics.
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15 Entries · 4 Sections

Formulas and Key Relations

1. Basic Classification and General Formulas

General formula of alkanes: CnH2n+2 [n = number of carbon atoms]

General formula of arenes with m rings: CnH2n-6m [n = carbon atoms, m = number of benzene rings]

2. Alkanes: Structure, Properties, and Preparation

sp3 hybrid orbitals in alkanes are at 109°28' directed to tetrahedron corners

Rotation around C-C single bond in alkanes is hindered by a small energy barrier of 1-20 kJ/mol due to torsional strain

Energy barrier to convert staggered ethane to eclipsed form is 12.5 kJ/mol

3. Methods of Preparation of Alkanes

C2H5Br + H2 -> C2H6 + HBr

R-Mg-X + H2O -> RH + Mg(OH)X

CH3OH + 2HI -> CH4 + I2 + H2O

CH3CHO + 4HI -> C2H6 + 2I2 + H2O

RCOONa + NaOH -> RH + Na2CO3

4. Chemical Reactions of Alkanes

CH4 + Cl2 -> CH3Cl + HCl

CH4 + I2 <-> CH3I + HI

CH4 + HNO3 -> CH3NO2 + H2O

C6H14 -> C6H13SO3H + H2O

CH3CH2OH -> CH2=CH2 + H2O

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Frequently Asked Questions

What are the important topics in Hydrocarbons for ICSE Class 11 Chemistry?
Key topics in Hydrocarbons include Classification and Basic Features, Alkanes: Structure, Isomerism, Preparation, and Reactions, Alkenes: Structure, Isomerism, Preparation, Reactions, and Tests, Alkynes: Structure, Acidic Nature, Preparation, and Reactions. Study these first, then practise questions on each for Class 11 exams.
How many formulas are in Hydrocarbons?
This sheet lists 15 formulas from Hydrocarbons, grouped by topic. Learn what each symbol stands for so you can apply the formula, not just recall it.
How should I revise Hydrocarbons for Class 11 exams?
Learn the core ideas first, then work through the 45 practice questions on Hydrocarbons. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for Hydrocarbons

All ICSE Class 11 Chemistry Formula Sheet

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