Question

(a) Write two uses of alcohol. [1+ 1 + 1 + 1 = 4]
(b) Write the formula of ethylene glycol and give two uses of it.
(c) Write the IUPAC name of glycerol. Menton two of its uses.
(d) What is the IUPAC name of m-cresol and o-cresol.

Answer 1

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(a)

Perhaps the two best-known alcohols are ethanol and methanol (or methyl alcohol). Ethanol is used in toiletries, pharmaceuticals, and fuels, and it is used to sterilize hospital instruments. It is, moreover, the alcohol in alcoholic beverages. The anesthetic ether is also made from ethanol.

(b)

Ethylene glycol (IUPAC name: ethane-1,2-diol) is an organic compound with the formula (CH2OH)2. It is mainly used for two purposes, as a raw material in the manufacture of polyester fibers and for antifreeze formulations. It is an odorless, colorless, sweet-tasting, viscous liquid. Ethylene glycol is toxic.

(c)

propane-1,2,3-triol

Glycerol/IUPAC ID

Formula and structure: The glycerol chemical formula is C3H8O3 and its extended formula is CH2OH-CHOH-CH 2OH. The IUPAC name for glycerol is 1, 2, 3- Trihydroxypropane or 1, 2, 3- Propanetriol.

(d)

meta-Cresol, also 3-methylphenol, is an organic compound with the formula CH3C6H4(OH). It is a colourless, viscous liquid that is used as an intermediate in the production of other chemicals. It is a derivative of phenol and is an isomer of p-cresol and o-cresol.

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