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Formula Sheet

Hydrocarbons

Madhya Pradesh Board · Class 11 · Chemistry

All formulas from Hydrocarbons in Madhya Pradesh Board Class 11 Chemistry. Key equations, constants, and identities for board exam preparation.

76 questions94 flashcards5 concepts

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11 Formulas · 3 Sections

Formulas

1. Core Classification and Basics

General formula of alkanes: CnH2n+2

General formula of alkenes: CnH2n

General formula of alkynes: CnH2n-2

General formula of alkyl groups: CnH2n+1

2. Alkanes: Isomerism, Preparation, and Reactions

General combustion of alkanes: CnH2n+2 + (3n+1)/2 O2 -> nCO2 + (n+1)H2O

General combustion of any hydrocarbon: CxHy + (x + y/4)O2 -> xCO2 + (y/2)H2O

Combustion of methane: CH4(g) + 2O2(g) -> CO2(g) + 2H2O(l); ΔcH° = -890 kJ mol-1

Combustion of butane: C4H10(g) + 13/2 O2(g) -> 4CO2(g) + 5H2O(l); ΔcH° = -2875.84 kJ mol-1

4. Alkenes: Structure, Isomerism, Preparations, and Reactions

C=C sigma bond enthalpy about 397 kJ mol-1; pi bond about 284 kJ mol-1

C=C double bond length = 134 pm; C-C single bond = 154 pm

C=C bond enthalpy = 681 kJ mol-1; C-C single bond in ethane = 348 kJ mol-1

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Frequently Asked Questions

What are the important topics in Hydrocarbons for Madhya Pradesh Board Class 11 Chemistry?
Hydrocarbons covers several key topics that are frequently asked in Madhya Pradesh Board Class 11 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Hydrocarbons — Madhya Pradesh Board Class 11 Chemistry?
Understand the core concepts first, then work through the 76 practice questions available for this chapter. Revise formulas and 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.

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All 9 chapters — Madhya Pradesh Board Class 11 Chemistry Formula Sheet

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