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Chemistry VCE practice questions

Exam-style questions from Edapt's growing shared question bank, the same bank the Exam Hall draws on. Answers are not published here. Sign up free and write your answer in Edapt to have it marked question by question, to the VCE scale.

Question 1Rate and extent of chemical reactions3 marks
Derive the integrated rate equation for a first-order reaction, in terms of $[A]_t$ and $[A]_0$, where $[A]_t$ is the concentration of reactant $A$ at time $t$ and $[A]_0$ is the initial concentration of $A$.
What a full answer covers
A full-mark answer will derive the rate equation, integrate it and express the integrated rate equation in terms of $[A]_t$ and $[A]_0$.
Question 2Fuels and energy2 marks
What is the difference between a primary cell and a secondary cell, in terms of their application and the chemical reactions that occur?
What a full answer covers
A full-mark answer will define primary and secondary cells and explain the difference between them.
Question 3Organic structures and reactions3 marks
Explain the difference between a primary, secondary and tertiary $C$ atom in an alkane, using the example of 2-methylpropane.
What a full answer covers
A full-mark answer will define primary, secondary and tertiary $C$ atoms, explain the differences between them and apply the definition to 2-methylpropane.
Question 4Fuels and energy10 marks
Compare the advantages and disadvantages of using coal and nuclear energy as a source of electricity, including the environmental impact and cost of production.
What a full answer covers
A full-mark answer will compare the advantages and disadvantages of coal and nuclear energy, discuss the environmental impact and cost of production.
Question 5Organic structures and reactions8 marks
Describe the reaction of an alkene with $H_2$ in the presence of a catalyst, including the role of the catalyst and the stereochemistry of the product.
What a full answer covers
A full-mark answer will describe the reaction, explain the role of the catalyst, describe the stereochemistry of the product and discuss the factors that affect the rate of the reaction.
Question 6Analysis of organic compounds12 marks
Explain how nuclear magnetic resonance (NMR) spectroscopy helps in the identification of an organic compound, including the principle of NMR spectroscopy and the interpretation of NMR spectra.
What a full answer covers
A full-mark answer will explain the principle of NMR spectroscopy, describe the process of obtaining an NMR spectrum, interpret an NMR spectrum and apply NMR spectroscopy to the identification of an unknown compound.
Question 7Fuels and energy3 marks
Describe the process of energy production in a coal-fired power plant, including the role of $CO_2$ and $H_2O$.
What a full answer covers
A full-mark answer will describe the process of energy production in a coal-fired power plant, explain the role of $CO_2$ and $H_2O$ and describe the conversion of heat energy to electrical energy.
Question 8Rate and extent of chemical reactions2 marks
What is the relationship between temperature and the frequency of effective collisions in a chemical reaction, according to collision theory?
What a full answer covers
A full-mark answer will explain how temperature affects collision frequency and effective collisions.
Question 9Analysis of organic compounds4 marks
How does infrared spectroscopy help in the identification of functional groups in an organic compound, using the example of $C=O$ and $O-H$ groups?
What a full answer covers
A full-mark answer will explain the principle of infrared spectroscopy, explain how it helps in the identification of functional groups, identify the characteristic absorption frequencies of $C=O$ and $O-H$ groups and apply infrared spectroscopy to the identification of an unknown compound.
Question 10Rate and extent of chemical reactions9 marks
Derive the expression for the equilibrium constant $K_c$ for a general reaction $aA + bB ightleftharpoons cC + dD$, in terms of the concentrations of the reactants and products.
What a full answer covers
A full-mark answer will derive the expression for $K_c$, explain the units of $K_c$ and discuss the significance of $K_c$ in chemical reactions.

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Chemistry VCE practice questions

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