VCE Chemistry Past Exam Questions
Browse VCE Chemistry exam questions from 2015–2026, including NHT and VCE papers. Filter by topic, year and paper; open the original source.
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Section B, Question 1(c)Question part (c)
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c. Miglitol, CgHy;NOg, can act as a reversible, competitive enzyme inhibitor for the reaction catalysed by a-glucosidase. The structure of miglitol is shown below. HO, HO HO OH
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c. i. Calculate the energy absorbed by the water in the saucepan. 2 marks Kim placed all of the equipment inside a sealed container with a total air volume of 0.125 m3 and repeated
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i. Identify a functional group in miglitol. 1 mark
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ii. Determine the overall energy efficiency of heating the water in the saucepan. 1 mark
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d. 9.0 g of C 3 H 8 was combusted in the sealed container shown above. Determine the mass of the reactant in excess. 4 marks
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e. In another investigation, Kim found that 15.3 g of C 2 H 5 OH (M = 46.0 g mol−1 ) was required to produce the same change in water temperature as the 9.0 g of C 3 H 8 . Explain
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Question 2 (7 marks) The equation for the complete combustion of octane, CgHyg, is 2CgHi5(l) + 250,(g) — 16CO5(g) + 18H,0(1)
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Question 2 continues on the next page. Question 2 (13 marks) Stef is an engineer working in the electroplating industry. Electroplating is a process that uses electrolysis to coat
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a. Explain, using oxidation numbers, why this is a reduction reaction. 2 marks
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a. Calculate the mass of CO, formed when 1.50 mol of CgH,g is completely combusted. 2 marks
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b. Explain why the effective electroplating of an object requires the same ion to be involved in both the anode and cathode reactions. 2 marks
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b. Explain why the combustion of CH, is exothermic with general reference to bond making and bond breaking. 2 marks
Search excerpt only. Open the original question for exact equations and diagrams.Source: 2025 VCE (NHT) Chemistry examination (PDF, 11.09 MB)How to use ClassConnect past exam questions
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