IIT JEE , AIEEE Forum - Articles Category , Community shelf - Some useful Sequences of Organic Chemistry -1

ramyadiamond

Here are some sequences that i thought might be useful for u guys. Have a look!!!

1. Acidic Strength -

H₂SO₄ >H₂CO₃> RCOOH > Phenol > CH₃OH > H₂O > ROH > Terminal Alkynes > NH₃ >Alkene > Alkane > H₂

2. Strength of Conjugate Base -

HSO₄^-- < RCOO^-< C₆H₅O^- < OH^- < RO^- < NH₂^-

3. Leaving Group Tendency-

HSO₄^- > RCOO ^- > C₆H₅O ^- > OH^- > RO^- > NH₂^-

4. Lewis Pi-Base Nature -

CH₂ = CH₂ < CH₃ -CH=CH₂ < CH₃- CH=CH -CH₃ < (CH₃)₂ -C=CH -CH₃ < (CH₃)₂ - C=C -(CH₃)₂

5. Rate of Electrophilic Addition -

CH₂ = CH₂ < CH₃ -CH=CH₂ < CH₃- CH=CH -CH₃ < (CH₃)₂ -C=CH -CH₃ < (CH₃)₂ - C=C -(CH₃)₂

CH₂=CH₂ > CH₂ =CH -I > CH₂=CH-Br > CH₂= CH -Cl

CH₂=CH₂ > CH₂ =CH-Cl > CH₂ =CH(Cl)₂ > (Cl)₂ C=C (Cl)₂

6. Bond Energy -

C- F > C-H > C-Cl > C-Br> C -I

H-F > H-Cl > H- Br >H-I

7. Acidic Nature-

HI > HBr > HCl > HF

8. Oxidising Nature -

F₂ > Cl₂ >Br₂ > I₂

9. Ease of Oxidation be SeO₂ of -

-CH₂ > -CH₃ >-CH

10. Stability order-

Conjugated Dienes > Isolated Dienes > Alkynes > Allenes

11. Rate of reduction -

R-I > R-Br > R-Cl >>>> R-F

H-I > H-Br > H-Cl > H-F

12. Strength Of Nucleophiles -

SH ^- > CN ^- > I^- > OH^- > N₃^- > Br^- > PhO^- > CH₃COO^- >Cl^- > F^- > NO₃^- > H₂O

13. Basisity-

H₂O < OH^-

ROH < R-O^-

CH₃COOH < CH₃COO ^-

NH₃ < NH₂^- < NH^2- < N^3-

SH^- >Cl^-

F^- > Cl^-> Br^- >I ^-

NH₃ > NH₂- NH₂>NH₂ OH

14. Nucleophilicity-

H₂O < OH^-

ROH < R-O^-

CH₃COOH < CH₃COO^-

NH₃ < NH₂^- < NH^2- < N^3-

CH₄ <<<< CH₃^-

CH₃ ^-> NH₂ ^- >OH ^- > F^-

SH^- > Cl^-

(In protic Solvents), F^- > Cl ^- > Br^-> I ^-

(In Aprotic Solvents), F^- < Cl ^- < Br^-< I ^-

NH₃ < NH₂ -NH₂ < NH₂-OH

15. Rate of S_N² Reaction-

CH₃OH > CH₃CH₂ OH> CH₃CH₂CH₂OH> CH₃ CH₂ CH₂CH₂ OH

CH₃OH > CH₃CH₂ OH > (CH₃)₂ CHOH > (CH₃)₃ C-OH

In general,

CH₃- > 1⁰ >2⁰ > 3⁰

16. Rate of S_N¹ Reaction-

3⁰ > 2⁰ >1⁰ > CH₃-

17. Density-

R-F < R-Cl < H₂O < R-Br < R -I

CH₄ < CH₃Cl < CH₂Cl₂ <CHCl₃ < CCl₄

18. Dipole Moment-

H-F > H-Cl > H-Br > H-I

CH₃Cl > CH₃ -F > CH₃- Br> CH₃ -I

CH₃Cl >CH₂Cl₂ > CHCl₃ > CCl₄= CH₄

19. Trend in boiling point of Alkyl Halides -

R-I > R-Br > R-Cl > R-F

H-F > H-I > H-Br > H-Cl

Hope this helps u all guys!!

Cheers!!!

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