2. What is the catalyst for the conversion of ethanol to ethene?
Pt
HNO3
NaOH
H2SO4

3. Which explanation best describes why an understanding of electrolysis has made a significant impact on the production of materials?
Electrolysis can be used to split water into hydrogen and oxygen.
Electrolysis provides a way to make non-spontaneous reactions occur.
Electrolysis reactions do not require an energy source.
Electrolysis can be used to produce aluminium.

4. Which statement concerning galvanic cells is correct?
The cathode is assigned a negative charge.
They are also known as electrolytic cells.
An external power source must be present.
Oxidation occurs at the anode.

5. Which is amphiprotic?
H2SO4
SO42-
HCO3-
NH4+

6. What did the Bronsted-Lowry definition of acids identify that made it a significant improvement over earlier definitions?
Acids are electron-pair acceptors.
Acids are proton donors.
Acids contain oxygen.
Acids contain hydrogen.

7. The following list of steps refers to an experimental plan for making an ester in a flask. Some of the steps in the list may NOT be required for this experiment. The steps are NOT in the correct sequence: (1) Heat the mixture under reflux. (2) Add three drops of concentrated sulfuric acid. (3) Add 1 mL of ethanol. (4) Add 1 mL of ethene. (5) Add 1 mL of ethanoic acid. (6) Distil the mixture. (7) Add three drops of phenolphthalein indicator. Which alternative is the best sequence for making an ester?
3, 5, 7, 1
5, 4, 2, 6
5, 3, 2, 1
4, 3, 7, 6

8. A car engine burns fuel with insufficient air. Which substance would be emitted in the exhaust in higher levels than from an engine with a correct fuel to air ratio?
Carbon dioxide
Water
Carbon monoxide
Oxygen

9. The Haber Process for producing ammonia was developed early in the twentieth century.What was the major advantage of its development?
It provided jobs for many who were unemployed.
A government sold the process to other governments.
The inventor sold the process for a great deal of money.
It provided a source of nitrogen for farming and industry.

10. Which of the following is an acid-base indicator?
Methanol
Methanoic acid
Methyl orange
Methyl ethanoate

11. Which of the following is a transuranic element?
Chromium
Cerium
Curium
Caesium

12. Which instrument is used to detect radiation from radioactive isotopes?
Ion-selective electrode
pH meter
Geiger counter
Atomic absorption spectrophotometer (AAS)

13. In which layer of the atmosphere does ozone act as a UV radiation shield?
Mesosphere
Stratosphere
Troposphere
Thermosphere

14. A sulfuric acid has a concentration of 5 x 10-4 mol L-1. What is the pH of this solution, assuming the acid is completely ionised?
4.0
3.6
3.0
3.3

15. In a titration of a strong base with a strong acid, the following procedure was used: (1) A burette was rinsed with water and then filled with the standard acid; (2) A pipette was rinsed with some base solution; (3) A conical flask was rinsed with some base solution; (4) A pipette was used to transfer a measured volume of base solution into the conical flask; and, (5) Indicator was added to the base sample and it was titrated to the endpoint with the acid. Which statement is correct?
No definite conclusion can be reached about the base concentration.
The calculated base concentration will be correct.
The calculated base concentration will be too low.
The calculated base concentration will be too high.

16. Ethanol can be reacted with ethanoic acid to produce ethyl ethanoate. What type of reaction is this?
Reduction
Polymerisation
Hydration
Esterification

17. Why is research into synthetic biopolymers attracting great interest?
They decompose more easily than traditional synthetic polymers.
They have superior physical properties compared to traditional synthetic polymers.
They can be produced more cheaply than traditional synthetic polymers.
They have superior chemical properties compared to traditional synthetic polymers.

18. Which of the following cations can be identified using a flame test?
Al3+
Zn2+
Cu2+
Mg2+