Chemical_properties_of_Ethanol-1

Chemical_properties_of_Ethanol-1 -...

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Objective            To find out the chemical properties and pH of ethanol and phenol, and  compare their differences between ethanol and phenol. Results                               Reaction of ethanol: Properties /  Reactions Observations /  Smell Corresponding equations (if any) pH of solution universal indicator  remains green,  pH=7 / Triiodomethane  reaction yellow precipitate  found at bottom of  test-tube, with  odour smell C 2 H 5 OH + 4I 2  + 6NaOH   CHI 3 (s) + HCOO - Na +  +  5NaI + 5H 2 O Reaction with  Na Na sinks to bottom,  colourless gas,  which gives a 'pop'  sound to burning  splint, evolves  slowly and  moderately. When  ethanol-ethoxide  mixture in test-tube  is poured onto a  petri-dish, small,  colourless  rectangular-shaped  crystals are formed  in a few minutes. 2C 2 H 5 OH + 2Na   2C 2 H 5 O - Na +  + H 2(g) Esterification When the mixture  of ethanol, 
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conc.H 2 SO 4  in test- tube is poured into  Na 2 CO 3  solution, a  smell like all- purpose adhesive  is noticeable.                               Reaction of phenol:   Properties  Reactions Observations  / Smell Corresponding equations (if any) Solubility in  water:      (a) a  little phenol      (b) a lot  of phenol phenol  dissolves  gradually on  shaking / insoluble,  phenol forms  oil-like droplets  on shaking  (soluble when  heated) pH of  solution universal  indicator  changes from  green to  orange, i.e.  acidic Reaction  with  NaHCO 3 phenol  becomes  insoluble after  adding  NaHCO 3  and  forms a  emulsion on 
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shaking Reaction  with NaOH Solubility of  phenol in  NaOH is much  higher than in  water. After  adding conc.  HCl, phenol 
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Chemical_properties_of_Ethanol-1 -...

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