Prepared by

C P PrashanthKV Ganeshkhind Pune

DISTINCTIONS BETWEEN SOME PAIRS OF ORGANIC COMPOUNDS (CHEMICAL TEST)

C2H5Br + KOH (aq) → C2H5OH + KCl

KCl + AgNO3 → AgBr + KNO3

Yellow ppt

CH3—CH(Cl)—CH3 + aqKOH → CH3—CH(OH)—CH3 + NaOI → CHI3

Isopropyl chloride i

CH3CH2CH2C1 + aq KOH → CH3CH2CH2OH + NaOI →Does not give

iodoform test.

CH3CH2OH +I2/NaOH →CH3-CHO

C6H5N2Cl + → C6H5-N=N-

3C6H5OH + FeCl3 → (C6H50)3 Fe + 3HC1

(iii)

3C6H5OH + FeCl3 → (C6H50)3 Fe + 3HC1

C6H5N2Cl + → C6H5-N=N-

+ Br2 →

• 1-Propanol (primary alcohol)does not produce turbidity at room temperature with Lucas reagent.

• CH3CH2CH2OH + anhyd ZnCl2 + HCl → No turbidity at room

• 2-Methyl-2-propanol(tertiary alcohol) reacts with Lucas reagent (anhyd ZnCl2 + HCl) giving turbidity immediately.

• (CH3)3C-OH + anhyd ZnCl2 + HCl → (CH3)3C-Cl

• Turbidity immediately

CH3—CH(CH3)—OH + 4I2 + 6NaOH → CHI3 + CH3COONa + 5NaI + 5H20

CH3CH(OH)CH2CH3 + I2 + NaOH → CHI3

CH3CH2CH2CH2OH + I2 + NaOH → No yellow ppt.

3C6H5OH + FeCl3 → (C6H50)3 Fe + 3HC1Violet

Primary amine can be tested by carbylamine test

Primary amine can be tested by carbylamine test

+ NaOH →C6H5-NH2 + C6H5-

→ C6H5SO2N(CH2-CH3)2

• Thanks

• C P Prashanth