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2.1and
Q2— Section header —
1.11E.
1.1Which ON E of the following compounds has the HIGHEST vapour pressure?
1.3hich ONE of the following combinations are BOTH UNSATURATED HYDROCARBONS
1.4Which ONE of the following set of values for activation energy (
1.5Consider t he following balanced equation for a system at equilibrium 2SO (g\
1.6hypothetical reaction reaches equilibrium at a certain temperature in a closed container according to the following balanced equation: A(g\ 2B(g\ 3C(s\ Which ONE of the following changes to the equil
1.7A hydr ochloric acid solution, HC an acetic acid solution, CH COOH(aq\
1.9the anode is the positive electrode. oxidation takes place at the cathode. electrons flow from the cathode to the anode.
1.10Which ONE of the following is used as a catalyst in the Ostwald process? Iron Copper
2.1.1Write down the GENERAL FORMULA of the homologous series to which this compound belongs. (1\
2.2The organic compound below has one positional isomer and one functional isomer.
2.2.1Define the term positional isomer. (2\ For this compound, write down the:
2.2.2IUPAC name of its POSITIONAL isomer (2\
2.2.3Structural formula of its FUNCTIONAL isomer (2\
2.3Consider the condensed st ructural formula of an organic compound below.
2.3.1Is this a PRIMARY, SECONDARY or TERTIARY alcohol? Give a reason for the answer.
2.3.2rite down the IUPAC name of the bove compound (2
2.3.3Write down the IUPAC name of the MA JOR ORGANIC PRODUCT formed when this compound undergoes an elimination reaction (2 [1
2.1.2Write down the STRUCTURAL formula of this compound. (3
3.1Define the term boiling point. The boiling points of compounds
3.2Give a reason why this is a fair comparison. (1\ The boiling points of and
3.3Which ONE of the three boiling points is most likely the boiling point of compound ? E xplain the answer.
Q3— Section header —
4.1Name the homologous series to which compound belongs (1 4. Write down the
4.2.1(1\
4.2III (1\
4.2IV (1\ 4. Consider eaction III
4.3.1TWO reaction conditions for this reaction
4.3.2IUPAC name of the primary alcohol that is formed 4.
4.5.1Structural formula of organic compound
4.5.2NAME or FORMULA of the catalyst that is used (1\
5.1Is the above reaction EXOTHERMIC or ENDOTHERMIC Give a reason for the answer. (2\ n antacid tablet of mass
5.2Calculate the average rate (in g \f the above reaction
5.3Calculate the volume of carbon dioxide, CO (g\ that will be collected at STP Assume that all the CO
5.4Write down ONE controlled variable for this investigation. (1\
5.5Write down a conclusion that can be made from the graph. (2\
Q5— Section header —
5.7Redraw the graph above in the ANSWER BOOK. On the same set of axes, (aq\of concentration is now used. Label this curve
6.2At equilibrium it is found that the concentration of the carbon dioxide is 0, 054 lculate the:
6.2.1Equilibrium constant, K , for this reaction at temperature
6.2.2Minimum mass of C (s\ that must be present in the c ontainer to obtain this equilibrium
6.4The tabl e below shows the percentages of CO (g\and CO(g\ in the container at different
6.4.1Is the reaction EXOTHERMIC or ENDOTHERMIC? Refer to the data in the table and explain the answer. (3\
6.4.2Use the informatio n in the table to determine temperature Show clearly how you arrived at the answer. (3\ [22] Physical Sciences/P222
7.2Write down the FORMULAE of the TWO bases in the above reaction.
7.3HBr(aq\eacts with Zn(OH\ (s\ according to the following balanced equation Zn (OH\
7.3.1Calculate the pH of the HBr solution remaining in the flask AFTER the reaction with Zn(OH\ (s\
7.3.2Calc ulate the mass of Zn(OH\ (s\ INITIALLY present in the flask if he initial concentration of HBr(aq\as 0,45
8.1State the energy conversion that takes place in this cell. (1\ 8. What is the function of component (1
8.5The reading on the vo ltmeter becomes ZERO after this cell operates for several hours.
8.5.1Give a reason for this reading by referring to the rate of oxidation and reduction half reactions taking place
8.5.2How will the reading on the voltmeter be affected Choose from INCREASES, DECREASES or REMAINS the same\ (1\
8.5.3Use Le Chatelier s principle to explain the answer to QUESTION
8.5.2(2\ [1 (g\ Platinum
Q9— Section header —
9.1Define the term electrolysis (2\
9.2For the above reaction, write dow n the:
9.2.1Half reaction that takes place at the cathode (2\
9.2.2NAME or FORMULA of the oxidising agent (1\
9.3Refer to the Table of Standard Reduction Potentials to explain why sodium ions are not reduc ed during this process. (3\ [8] Physical Sciences/P2 14 DBE/November 20198
10.1Write down the NAME or FORMULA of:
10.1.1Gas (1
10.1.2Gas (1
10.1.3Acid (1 10. Write down the: 10.