Information Sheet

DATA FOR PHYSICAL SCIENCES GRADE 12PAPER 2 (CHEMISTRY)GEGEWENS VIR FISIESE WETENSKAPPE GRAAD 12VRAESTEL 2 (CHEMIE) TABLE 1: PHYSICAL CONSTANTS/TABEL 1: FISIESE KONSTANTES TABLE 2: FORMULAE/TABEL 2: FORMULES TABLE 3: THE PERIODIC TABLE OF ELEMENTSTABEL 3: DIE PERIODIEKE TABEL VAN ELEMENTE TABLE 4A: STANDARD REDUCTION POTENTIALSTABEL 4A: STANDAARD-REDUKSIEPOTENSIALE TABLE 4B: STANDARD REDUCTION POTENTIALSTABEL 4B: STANDAARD-REDUKSIEPOTENSIALE

Question 9

QUESTION 9 (Start on a new page.) Chlorine is produced industrially by the electrolysis of a concentrated sodium chloridesolution, NaCℓ(aq). The balanced equation for the net (overall) cell reaction is as follows: 9.1 Define the term electrolysis. (2) 9.2 For the above reaction, write down the: 9.2.1 Half-reaction that takes place at the cathode (2) … Read more

Question 6

QUESTION 6 (Start on a new page.) Initially 60,8 g pure carbon dioxide, CO2(g), is reacted with carbon, C(s), in a sealedcontainer of volume 3 dm3. The reaction reaches equilibrium at temperature Taccording to the following balanced equation: 6.1 Define the term chemical equilibrium. (2) 6.2 At equilibrium it is found that the concentration of … Read more

Question 5

QUESTION 5 (Start on a new page.) The calcium carbonate (CaCO3) in antacid tablets reacts with dilute hydrochloric acid(HCℓ) according to the following balanced equation: 5.1 Is the above reaction EXOTHERMIC or ENDOTHERMIC? Give a reason for the answer. (2) An antacid tablet of mass 2 g is placed in HCℓ(aq). After 30 s the … Read more

Question 4

QUESTION 4 (Start on a new page.) The flow diagram below shows how compound A can be used to prepare other organiccompounds. The numbers I, II, III and IV represent different organic reactions. Use the information in the flow diagram to answer the following questions. 4.1 Name the homologous series to which compound A belongs. … Read more

Question 2

QUESTION 2 (Start on a new page.) 2.1 The IUPAC name of an organic compound is 4,4-dimethylpent-2-yne. 2.1.1 Write down the GENERAL FORMULA of the homologous series to which this compound belongs. (1) 2.1.2 Write down the STRUCTURAL formula of this compound. (3) 2.2 The organic compound below has one positional isomer and one functional … Read more