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not assigned electronegativity values. [2]
(ii) State and explain the trend in electronegativity across period 3 from Na to Cl. [2]
(iii) Explain why Cl2 rather than Br2 would react more vigorously with a solution of I-. [2]
(d) State the acid-base properties of the following period 3 oxides.
MgO Al2O3 P4O6
Write equations to demonstrate the acid-base properties of each compound. [7]
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9. Ethene is an unsaturated hydrocarbon used as a starting material for many organic chemicals.
(a) State the meaning of the term unsaturated hydrocarbon. [1]
(b) State an equation for the conversion of ethene to ethanol and identify the type of
reaction. [2]
(c) Describe the complete oxidation of ethanol. Include the conditions, reagents required and
any colour changes. Name the organic product X. [4]
(d) State an equation for the reaction between ethanol and compound X. Include any other
reagent required. Name the organic compound Z and state one use of this product. [4]
(e) For compounds X and Z, use Table 18 in the Data Booklet to identify one similar and two
different absorption bands in their infrared spectra. [3]
(f) Ethanol can also undergo partial oxidation to form compound Y. Name compound Y.
For compounds X and Y, use Table 19 in the Data Booklet to identify one similarity and
one difference in their respective 1H NMR spectra. Do not consider splitting patterns in
your answer. [3]
(g) (i) State the meaning of the term isomers. [1]
(ii) Draw the functional group isomers of C3H6O . [2]
(iii) State the meaning of the term optical isomers. Draw the alcohol with the molecular
C4H10O
formula which exhibits optical isomerism and identify the chiral carbon atom. [3]
(iv) Other than the optical isomers in (g) (iii), draw the other three alcohol isomers of
molecular formula C4H10O and identify the isomer that does not undergo oxidation. [2]
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