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S8137602
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National Qualications
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Total marks — 25
Attempt ALL questions. You may use a calculator. Instructions for the completion of Paper 1 are given on page 02 of your answer booklet S813/76/02. Record your answers on the answer grid on page 03 of your answer booklet. You may refer to the Chemistry Data Booklet for Higher and Advanced Higher. Space for rough work is provided at the end of this booklet. Before leaving the examination room you must give your answer booklet to the Invigilator; if you do not, you may lose all the marks for this paper.
S813/76/12 Chemistry Paper 1 — Multiple choice
Date — Not applicable Duration — 40 minutes
Total marks — 25 Attempt ALL questions
1. Which of the following elements, at room temperature, could be described as monatomic?
A Argon B Boron C Iodine D Sulfur
2. The table shows the first three ionisation energies of aluminium.
Ionisation energy (kJ mol−^1 ) 1st 2nd 3rd 578 1817 2745
Using this information, what is the enthalpy change, in kJ mol−^1 , for the following reaction?
Al 3 +(g) + 2e−^ ↓ Al+(g)
A + 2167
B − 2167
C + 4562
D − 4562
3. Which element has the greatest attraction for bonding electrons?
A Bromine B Chlorine C Lithium D Sodium
4. Which of the following chlorides is likely to have the most ionic character?
A BeCl 2 B CaCl (^2) C CsCl D LiCl
8. Aspirin and oil of wintergreen are used in medicine. Their structures are shown below.
H 3 C
O
C
O
OH
C
O
OH
O
C
O
CH 3
aspirin oil of wintergreen
Identify the term which can be applied to aspirin but not to oil of wintergreen. A Aldehyde B Ketone C Ester D Carboxylic acid
9. The structure of caryophyllene, which can be extracted from clove oil, is
CH
CH 2 CH^3
C
CH 2
CH 2
C
CH CH
H 2 C
H 3 C C
H 2 C
H 2 C
CH 3
Which of the following would be the best solvent for extracting caryophyllene? A CH 3 CH 2 CH 2 CH 2 CH 2 CH (^3) B CH^3 CH^2 CH^2 CH^2 CH^2 CHO C CH 3 CH 2 CH 2 CO CH 2 CH (^3) D HO CH 2 CH 2 CH 2 CH 2 CH 2 CH (^3)
10. In α-amino acids the amino group is on the carbon atom next to the carboxyl group.
Which of the following is an α-amino acid?
A CH COOH
H 2 C
H 3 C
NH 2
B CH COOH
SH
H 2 C
NH 2
C NH
CH
H 2 C CH
H 2 C CH^2
2
CH COOH
2
D NH
CH
H 2 C CH
H 2 C CH
2
CH (^) COOH
2
2
[Turn over
12. Which of the following reactions can be classified as reduction?
A CH 3 CH 2 OH ↓ CH 3 COOH
B CH 3 CH(OH)CH 3 ↓ CH 3 COCH 3
C CH 3 CH 2 COCH 3 ↓ CH 3 CH 2 CH(OH)CH 3
D CH 3 CH 2 CHO ↓ CH 3 CH 2 COOH
13. Which of the following structural formulae represents a tertiary alcohol?
A
CH 3
CH 2
CH 3
H 3 C C OH
B
H 3 C C CH 2 CH 3
OH
CH 3
C
OH
H 3 C CH 2 CH 2 C CH 3
OH
D
OH
H 3 C CH 2 C CH 2 CH 3
H
[Turn over
14. A mixture of sodium bromide and sodium sulfate is known to contain 10 moles of sodium and 4 moles of bromide ions. How many moles of sulfate ions are present? A 3 B 4 C 5 D 6 15. 4·6 g of sodium is added to 4·8 litres of oxygen to form sodium oxide. When the reaction is complete, which of the following statements will be true? (Take the volume of 1 mole of oxygen to be 24 litres.) A 0·10 mol of oxygen will be left unreacted. B 0·10 mol of sodium will be left unreacted. C 0·15 mol of oxygen will be left unreacted. D 0·20 mol of sodium oxide will be formed. 16. A student obtained a certain volume of carbon dioxide by the reaction of 20 cm^3 of 2 mol l−^1 hydrochloric acid, HCl, with excess sodium carbonate.
2HCl(aq) + Na 2 CO 3 (aq) ↓ 2NaCl(aq) + CO 2 (g) + H 2 O(ℓ)
The student carried out a similar experiment using sulfuric acid, H 2 SO4.
H 2 SO 4 (aq) + Na 2 CO 3 (aq) ↓ Na 2 SO 4 (aq) + CO 2 (g) + H 2 O(ℓ)
Which solution of sulfuric acid would give the same final volume of carbon dioxide when added to excess sodium carbonate?
A 10 cm^3 of 2 mol l−^1 B 20 cm^3 of 2 mol l−^1 C 10 cm^3 of 4 mol l−^1 D 20 cm^3 of 4 mol l−^1
20. The potential energy diagram for a reaction is shown.
Reaction pathway
Potential energy
(kJ mol
−^1 )
∆ H , in kJ mol−^1 , for the forward reaction is
A + 361
B − 93
C − 227
D − 361
21. Which of the following is not a correct statement about the effect of a catalyst? The catalyst A provides energy so that more molecules have successful collisions B lowers the energy that molecules need for successful collisions C provides an alternative route to the products D allows more molecules to have energies greater than the activation energy. 22. Which of the following equations represents an enthalpy of combustion?
A C 2 H 6 (g) + 3 O 2 (g) ↓ 2CO 2 (g) + 3H 2 O(ℓ)
B C 2 H 5 OH(ℓ) + O 2 (g) ↓ CH 3 COOH(ℓ) + H 2 O(ℓ)
C CH 3 CHO(ℓ) + O 2 (g) ↓ CH 3 COOH(ℓ)
D CH 4 (g) + 1 O 2 (g) ↓ CO(g) + 2H 2 O(ℓ)
23. 5N 2 O 4 (ℓ) + 4CH 3 NHNH 2 (ℓ) ↓ 4CO 2 (g) + 12H 2 O(ℓ) + 9N 2 (g) ∆ H = − 5116 kJ
The energy released when 2 moles of each reactant are mixed and ignited is A 2046 kJ B 2558 kJ C 4093 kJ D 5116 kJ.
[Turn over
25. Ethanol and ethanoic acid are flammable liquids. Which of the following diagrams shows the correct set up for the separation of ethanol from ethanoic acid? A water in
water out heating mantle
B
water out
water in heating mantle
C
water in
water out
D
water out
water in
[END OF SPECIMEN QUESTION PAPER]
SPACE FOR ROUGH WORK
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Instructions for the completion of Paper 1 are given on page 02. Record your answers on the answer grid on page 03. Use blue or black ink. Before leaving the examination room you must give your answer booklet to the Invigilator; if you do not, you may lose all the marks for this paper.
S813/76/02 Chemistry Paper 1 — Multiple choice Answer booklet Date — Not applicable Duration — 40 minutes
S813760202
Paper 1 — 25 marks
The questions for Paper 1 are contained in the question paper S813/76/12. Read these and record your answers on the answer grid on page 03. Use blue or black ink. Do NOT use gel pens or pencil.
- The answer to each question is either A, B, C or D. Decide what your answer is, then fill in the appropriate bubble (see sample question below).
- There is only one correct answer to each question.
- Any rough working should be done on the space for rough work at the end of the question paper S813/76/12. Sample question To show that the ink in a ball-pen consists of a mixture of dyes, the method of separation would be: A fractional distillation B chromatography C fractional crystallisation D filtration. The correct answer is B — chromatography. The answer B bubble has been clearly filled in (see below).
A B C D
Changing an answer If you decide to change your answer, cancel your first answer by putting a cross through it (see below) and fill in the answer you want. The answer below has been changed to D.
A B C D
If you then decide to change back to an answer you have already scored out, put a tick ( 3 ) to the right of the answer you want, as shown below:
A B C D
or
A B C D
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National Qualications
H^ SPECIMEN ONLY
S813/76/12 Chemistry
Paper 1 — Multiple choice
Marking Instructions
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Marking instructions for each question
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- C
- B
- C
- D
- D
- A
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- B
- C
- B
- A
- C
- A
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- A
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