Math Calculator Maths Formulas Physics Calculator Physics Formulas Chemistry Calculator Chemistry Formulas

General Organic Chemistry Formulas

If you are looking for assistance on Organic Chemistry have a glance at General Organic Chemistry Formulas prevailing. Understanding the concepts of General Organic Chemistry plays a crucial role to understand relatively advanced concepts in future. Refer to the General Organic Chemistry Formulae Collection given in a concise and informative manner. Make the most out of the related formula that falls under General Organic Chemistry and learn each of them easily.

Solve your chemistry problems fastly and efficiently taking the help of Chemistry Formulas and learn about the Concepts without much effort.

List of General Organic Chemistry Formulae

A lot of you might consider Organic Chemistry difficult due to its immense number of equations. Once you learn the formulas you will feel it quite simple and no longer difficult. With proper grip on the list of important formulas for General Organic Chemistry nothing can stop you from achieving stronger subject knowledge as well as higher grades in your exams. Gain deeper insights into the topics of Organic Chemistry with our GOC Formula Sheet & Tables.

General Organic Chemistry formulas img 1
General Organic Chemistry formulas img 2
e.g. → \(\stackrel{\ominus}{\mathrm{N}}\) H, \(\stackrel{\ominus}{\mathrm{O}}\), -CH2 – CH2, – CH3 etc Eq. \(\stackrel{\oplus}{\mathrm{N}}\) H3, OH, NO2, CH = CH2 etc
→ It is developed by partial displacement of shared pair of electron.
→ It is distance dependent
General Organic Chemistry formulas img 3
General Organic Chemistry formulas img 4
Eq → \(\stackrel{\ominus}{\mathrm{N}}\)H , NH2, OH, CH = CH2 etc Eq → CH = O, C ≡ N, etc
→ It is developed by complete transfer of π-electron

Comparision of +I Power

  • Anion > Csp3
  • In alkyl gp; +I ∝ Branching
  • If branching is same, then +I ∝ no of carbon

Comperision of -I Power

  • Cation > neutral gp.
  • -I ∝ \(\frac{1}{size}\)
  • If size almost same (same period)
    (-I ∝ E.N)

Comparision of + m Power

  • Anion > neutral gp.
  • +m ∝ \(\frac{1}{size}\)
  • If size almost same +m ∝ \(\frac{1}{E.N.}\)

Comparision of m & I effect

  • Charge developed m effect is greater than charge developed by I effect.
  • Except hologen, m effect dominant over I effect.
  • In benzene ring M effect work at o/p position while I effect.

work at all three o, m, p position, however intensity of effect.
↓ as distance ↑
General Organic Chemistry formulas img 5
General Organic Chemistry formulas img 6

General Organic Chemistry formulas img 7

General Organic Chemistry formulas img 8

(3) Stability of Reaction intermediate:
General Organic Chemistry formulas img 9

Method – 1:

No of π bond hybridisation
0 sp3
1 sp2
2 sp

Method – 2:

No. of ep. hybridisation
2 sp
3 sp2
4 sp3

ep = bp + lp
bp → no of CT bond of hybrid atom
lp → (i) when C carry + ve or radical then lp is zero
(ii) When C carry – ve, then lp is one
When lp or -ve charge present in conjugation then their atom always present in sp2 hybridised state.

Aromaticity Anti Aromaticity
Cyclic cyclic
Planner Planner
Conjugation Conjugation
4n + 2 = πe 4n = πe
n = 0, 1, 2, 3 ….. n = 1, 2, 3 …….

Note: Such molecule in which all the connecting
⇒ Position present in sp or sp2 hybridised state is said to be planner molecule.
⇒ More than 7C ring are normally non planner.


Stability of free radical, alkene, carbocation ∝ Hyperconjugation

∝ no of α-H

Heat of hydrogenation (ΔH) ∝ Reactivity of alkene
∝ \(\frac{1}{\text { stability of alkene }}\)
⇒ Reactivity of E.S.R ∝ Activating power
∝ – ve charge on benzene ring
⇒ Reactivity of E.AR ∝ – ve charge on alkene
∝ stability of carbocation
⇒ Reactivity N.A.R ∝ + ve charge on the C of > C = O gp.
⇒ Reactivity of halide ∝ stability of carbocation
⇒ Reactivity of alcohol ∝ stability of carbocation towards HX
⇒ Rate of De-carboxylation ∝ stability of carboanion
⇒ Reactivity of F.R.S.R ∝ Stability of C-free radical
⇒ Reactivity of N.S.R ∝ Power of leaving gp.
⇒ Rate of Dehydration ∝ stability of carbocation
⇒ Rate of De-hydrohalogination ∝ stability of carbocation

Leaving gp
weaker base are better leaving gp.

Nucleophilicity (N.S.)
General Organic Chemistry formulas img 10

General Organic Chemistry formulas img 11

General Organic Chemistry formulas img 12

Visit the one stop destination for formulae of various subjects and have a quick look at them to clear all your ambiguities.