DISTINCTION ( IODOFORM TEST ) BETWEEN PAIRS OF ALCOHOL CLASS 12

DISTINCTION BETWEEN PAIRS ( CHEMICAL TEST ) TOPIC :-  ALCOHOL

          CLASS 12   {ONE MARKS}

                                                                    (CLASS IX, X , XI , XII , NEET and JEE)

                                            IODOFORM TEST

All alcohol containing CH3CH(OH) - GROUP linked to carbon or hydrogen atom can be distinguish from other alcohol By IODOFORM (CHI3) test 

1 ETHANOL AND METHANOL

Ethanol gives iodoform test

when Ethanol heated with aqueous solution of NaOH  and iodine solution its form yellow ppt of iodoform (CHI3)

Methanol does not show iodoform test

2ETHANOL AND PROPANOL

Ethanol gives iodoform test

when Ethanol heated with aqueous solution of NaOH  and iodine solution its form yellow ppt of iodoform (CHI3)

propanol does not show iodoform test

3 PROPAN-2-OL AND PROPAN-1-OL

PROPAN-2-OLgives iodoform test

when PROPAN-2-OLheated with aqueous solution of NaOH  and iodine solution its form yellow ppt of iodoform (CHI3)

propan-1-ol does not show iodoform test

4 BUTAN-2-OL AND BUTAN-1-OL

BUTAN-2-OLgives iodoform test

when BUTAN-2-OL heated with aqueous solution of NaOH  and iodine solution its form yellow ppt of iodoform (CHI3)

BUTAN-1-OL does not show iodoform test