What is the value of K for the synthesis of sulfur trioxide? When 20 mL of 0. Assume that the specific heat capacities of the solutions are equal and constant. Which of the following best describes the temperature change when 10mL of 0. An asymmetric alkene, compound X, with a molecular weight of Treatment of Y with acidified potassium dichromate resulted in colour change of the solution from orange to green, while no colour change was observed when Z was treated with same reagent.
Alkanes, alkenes and alkynes are simple hydrocarbon chains with no functional groups, with alkanes being the simplest organic compounds in organic chemistry. Butyl butanoate is a clear, colourless liquid that has pleasant aroma that is used to add fruity pineapple flavours. Outline the steps required for the synthesis of butyl butanoate in a school laboratory.
Support your answer with a diagram and a chemical equation using structural formulae. Many health problems that make our body too acidic or too basic are usually linked to the pH of blood. Hyperventilation is a condition in which you have rapid and deep breathing with more exhaling than inhaling. Explain the effect of hyperventilation on the pH of blood.
Support your answer with at least ONE chemical equations. Methanol can be synthesised from carbon monoxide which can be produced from a reverse water-gas shift reaction involving only gaseous components.
At time T 1 , some carbon dioxide was added to the system. Sketch the concentrations after time T 2 for all species. Explain how industry could maximise the production of carbon monoxide. The information in the table shows how the solubility of calcium hydroxide is affected by temperature. Predict if a precipitate of calcium hydroxide will be observed in the resultant mixture.
Support your answer with relevant calculations. Explain the treatment of iron III contaminated tailings using calcium hydroxide with reference to solubility. Include relevant chemical equation. Formic acid HCOOH is an antibacterial agent that is also found in nature in most ants and stringless bees as an agent used on their prey or to defend the nest.
Calculate the p K b of the formate ion. Ethanol-blended fuel is widely used around the world as a biofuel additive for gasoline in vehicles. Calculate the pOH of the resulting solution after In pyrometallurgical processing of copper II carbonate minerals, the ores are thermally decomposed in the roasting process to form copper II oxide. The copper II oxide can then be dissolved in sulfuric acid to give the corresponding copper II salt which can be refined further to give copper metal. In laboratory, The resulting solution was made up to mL with distilled water.
A colorimeter was used to measure the absorbance of the final solution to be 0. Define the term amphoteric. Include at least TWO balanced chemical equations in your answer. Primary, secondary and tertiary alcohols of the same carbon length have quite different boiling points.
Explain the difference in boiling point of these organic compounds, showing all intermolecular forces. Support your answer with diagrams. Compound X is a haloalkane of molar mass It has the elemental composition of The compound X underwent substitution reaction to produce compound Y. Treatment of compound Y with an oxidising agent slowly formed a single organic compound. A detailed step-by-step solutions for the Chemistry Trial Exam Paper are available on Learnable.
Please login or create your free account to access the complete solutions. Hee-Chan is the author of Chemistry resources on Learnable. He loves teaching and helping students to "learn smarter", using his multidisciplinary knowledge of science and engineering. He is also currently completing his doctoral degree in mineral processing at The University of Sydney. Learnable Education and www.
Excerpts and links may be used, provided that full and clear credit is given to Learnable Education and www. This free Chemistry trial paper written for the new syllabus covers modules 5 - 7.
We recommend to complete under exam conditions! Advice for getting the most out of HSC Chemistry Trial Exam Paper It is recommended you complete Module 5 — 7 theory lessons and quizzes on the Year 12 Chemistry course on Learnable before attempting this exam to ensure you perform your best. Attempt all questions. You must write in black pen. Do not write in pencil. You may only use a pencil for drawing diagrams and graphs. All necessary working should be shown in every question.
Marks may be deducted for careless or badly arranged work. Set out all working for numerical questions and provide appropriate units. You may refer to a formulae sheet and data sheet. Calculators approved by NESA may be used. Each question is worth 1 mark. Allow 35 minutes for this section. Question 1 Which structural formula represents pentanamide? Question 4 Which indicator would be best for this titration? Indicator Colour change range pH A Thymol blue 1.
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