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Unknown # 1

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  1. Unknown # 1 Type of Compound Alcohol Aldehyde Ketone

  2. Set C Set A Set B trans-cinamaldehyde acetophenone 1-octanol cyclohexanone 4-methyl-2-pentanol 2-methyl-1-propanal 2-propanone 1-pentanol 2-methyl-1-propanol 2-propanol 2-butanone benzaldehyde 2-butanol 2-pentanone 1-pentanol Your unknown will be from one of these sets.

  3. Procedure Classification Tests Solid Derivative

  4. Classification Tests Chromic acid test Iodoform test 2,4-Dinitrophenylhydrazine test

  5. Chromic Acid Test CrO3/H2SO4 in acetone Cr3+ H2CrO4 green red

  6. Chromic Acid Test RCH2OH RCOOH R2CHOH R2CO RCOOH RCHO

  7. Iodoform Test Reagent: NaOH and I2 (NaOI)

  8. Iodoform Test

  9. 2,4-dinitrophenylhydrazine test Aldehyde or ketone

  10. 2,4-dinitrophenylhydrazone +

  11. Derivatives Aldehydes and Ketones 1. 2,4-dinitrophenylhydrazone 2. Semicarbazone

  12. Alcohol Derivative 3,5-dinitrobenzoate 3,5-dinitrobenzoyl chloride

  13. E B D A C CrO3 + - B,C A, D, E + - DNP + - B C E A,D Iodoform + - D A