A LEVEL CHEMISTRY PAPER 1 2022 EXAM QUESTIONS FROM REAL EXAM

A LEVEL CHEMISTRY PAPER 1 2022 EXAM QUESTIONS FROM REAL EXAM 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. 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] …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… ……………………………………………………………