A LEVEL Chemistry Paper 1 2022 Exam Questions From Real Exam

A LEVEL Chemistry Paper 1 2022 Exam Questions From Real Exam A-Level Chemistry AQA Paper 1 – Inorganic and Physical Chemistry Predicted Paper 2022 Name ………………. Date ………………… 2 hours allowed Question Possible marks Marks gained 1 9 2 8 3 8 4 14 5 15 6 14 7 10 8 8 9 19 Total 105 The Advanced Information from the exam board gives us a broad overview of what is covered in the exam. The information was given in ranked order, and this has been reflected in the mark allocation and topics on this paper. There are questions in this paper that cover topics that are not listed by the exam board. These are in the multiple-choice section and a few marks in low tariff and synoptic questions – this is exactly what you should expect in the exam. Primrose Kitten – YouTube Tutorials for GCSE and A-Level Downloaded by charity nimo () A LEVEL Chemistry Paper 1 2022 Exam Questions From Real Exam 01 Propanoic acid dissociates slightly in aqueous solution. 01.1 Write an expression for the acid dissociation constant Ka for propanoic acid. [1 mark] …………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………… 01.2 The Ka value of propanoic acid is 1.35×10-5 moldm-3 . A buffer solution is prepared containing 2.15×10-2 mol of propanoic acid and 1.50×10-2 mol of sodium propanoate in 1.00 dm3 solution. I. Calculate the pH of the buffer solution 25°C. [3 marks] …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… II. A small amount of aqueous NH3(aq) is added to the buffer solution. Explain how the buffer solution would respond to the added NH3(aq). [2 marks] …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… III. The student adds 0.25 g of Mg to 1.00 dm3 of the buffer solution. Calculate the pH of the new buffer solution. (Mr = 24.3 g/mol) [3 marks] …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… Primrose Kitten – YouTube Tutorials for GCSE and A-Level Downloaded by charity nimo () A LEVEL Chemistry Paper 1 2022 Exam Questions From Real Exam 02 A sample of X was analysed by mass spectrometry. The following results were obtained for the atoms of X in the sample. Relative isotopic mass Relative abundance 16 99.82 17 0.04 18 0.14 02.1 Calculate the relative atomic mass of element X. Give your answer to two d