Chemistry Senior Certificate Examination

Satisfactory Essays
SENIOR CERTIFICATE EXAMINATION – 2008 SENIORSERTIFIKAAT-EKSAMEN – 2008

PHYSICAL SCIENCE P2/NATUUR- EN SKEIKUNDE V2 CHEMISTRY/CHEMIE HIGHER GRADE/HOËR GRAAD MAY – JUNE/MEI – JUNIE 2008 MEMORANDUM
MARKS/PUNTE: 200

This memorandum consists of 8 pages. Hierdie memorandum bestaan uit 8 bladsye.

Copyright reserved/Kopiereg voorbehou

Please turn over/Blaai om asseblief

Physical Science/Natuur en Sielkunde/HG/P2 2 DoE/May-Jun./Mei-Jun./2008 Senior Certificate Examination/Seniorsertifikaat-eksamen Memorandum

QUESTION 1/VRAAG 1 1.1 1.6 1.11 B C B 1.2 1.7 1.12 D B C 1.3 1.8 1.13 C B D 1.4 1.9 1.14 A A A 1.5 1.10 1.15 A C D

(15 x 4)

[60]

QUESTION 2/VRAAG 2 2.1 2.1.1 A B C D 2.1.2 partially soluble / gedeeltelik oplosbaar soluble  / oplosbaar soluble  / oplosbaar insoluble  / onoplosbaar

Accept insoluble / Aanvaar onoplosbaar

(4)

Iodine and ethanol  have weak Van der Waals (intermolecular) forces (comparable strength forces) between their molecules and therefore they dissolve  Jodium en etanol het swak Van der Waalskragte (intermolekulêre kragte) (vergelykbare kragsterkte) tussen hul molekules en sal derhalwe oplos. OR Ethanol has a non polar carbon chain and I2 molecule is non polar hence iodine is soluble in ethanol. / Etanol besit 'n nie-polêre koolstofketting en I2-molekule is nie-polêr, dus is jodium oplosbaar in etanol. Gas molecules have no volume  Gasmolekule besit geen volume nie. As pressure increases , gas molecules are closer to each other , therefore IMF increases , thus smaller volume.  Wanneer die druk toeneem, is die gasmolekules nader aan mekaar, die IMK neem gevolglik toe en die volume verklein.

(3)

2.2 2.2.1 2.2.2

(2)

(4)

2.2.3

pV = nRT 

pV m  R T M   ,70 x8,31 7 1  M
7,70 x8,31 = 63,99 ≈ 64 g.mol-1 1  Gas is sulphur dioxide / swaweldioksied (SO2)

M=

(7) [20]

Copyright reserved

Please turn over

Physical Science/Natuur en Sielkunde/HG/P2 3

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