Unformatted text preview: B +412.0 kJ mol–1
C +1648 kJ mol–1
D +6592 kJ mol–1
(Total for Question 5 = 1 mark) *N37962A0324* 3 Turn over 6 The graph below represents the successive ionization energies of an element X plotted
against the number of the electron removed. X is not the symbol for the element.
2 0 2 4
Electron removed 10 12 (a) From this graph it is possible to deduce the group in the Periodic Table to which X
belongs. X is in
A Group 1 B Group 3 C Group 5 D Group 7 (b) From the graph it is possible to deduce that the most stable ion of X will be
A X3+ B X+ C X– D X3–
(Total for Question 6 = 2 marks) Use this space for any rough working. Anything you write in this space will gain no credit. 4 *N37962A0424* 7 Element R is in Group 1 of the Periodic Table and element T is in Group 6. R and T
are not the symbols for the elements.
(a) The compound of R and T will have the formula
(b) The compound of R and T will have bonding which is predominantly
C dative covalent.
(c) In terms of its electrical conductivity, the compound of R and T will
A conduct when solid and liquid.
B conduct when solid but not when liquid.
C conduct when liquid but not when solid.
D not conduct when solid or liquid.
(Total for Question 7 = 3 marks)
Use this space for any rough working. Anything you write in this space will gain no credit. *N37962A0524* 5 Turn over 8 Ethane reacts with chlorine when the substances are exposed to UV radiation.
(a) The equation for this reaction is
A C2H6 + Cl2 C2H5Cl + HCl B C2H6 + Cl2 C2H4Cl2 + H2 C C2H6 + Cl2 2CH3Cl D C2H4 + Cl2 C2H4Cl2 (b) The role of the UV radiation in the reaction is to
A break the Cl Cl bond forming Cl• free radicals. B break the Cl Cl bond forming Cl+ and Cl– ions. C break the C C bond in ethane forming CH3• free radicals. D break a C H bond in ethane forming C2H5• free radicals. (c) The overall reaction between ethane and chlorine is best described as
A addition. B homolytic fission. C heterolytic fission. D substitution.
(Total for Question 8 = 3 marks) Use this space for any rough working. Anything you write in this space will gain no credit. 6 *N37962A0624* 9 This question concerns the following compounds A B C D Which of these compounds will show geometric (E–Z or cis/trans) isomerism?
(Total for Question 9 = 1 mark)
10 The correct name for the compound shown below is A 2-methylbut-3-ene
(Total for Question 10 = 1 mark)
11 Most compounds of lead are insoluble, an exception being lead(II) nitrate. Therefore a
good method of preparing lead(II) sulfate is
A adding dilute sulfuric acid to lead metal.
B adding concentrated sulfuric acid to lead metal.
C adding dilute sulfuric acid to lead(II) nitrate solution.
D adding dilute sulfuric acid to solid lead(II) oxide.
(Total for Question 11 = 1 mark) *N37962A0724* 7 Turn over...
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This note was uploaded on 09/22/2013 for the course CHEMISTRY Organic Ch taught by Professor Yang during the Fall '12 term at British School Of Washington.
- Fall '12