Chemical properties of Ethanol & Phenol

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Chemical properties of Ethanol & Phenol

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

C2H5OH + 4I2 + 6NaOH CHI3(s) + HCOO-Na+ + 5NaI + 5H2O

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.

2C2H5OH + 2Na 2C2H5O-Na+ + H2(g)

Esterification

When the mixture of ethanol, ethanoic acid & conc.H2SO4 in test-tube is poured into Na2CO3 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