A-Level Chemistry OCR-A Paper 1 - Periodic table, elements and physical chemistry

Predicted Paper 2022 Name ……………… Date ………………… 2 hours 15 minutes allowed You should spend a maximum of 20 minutes on section A. 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 in 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. Section A 01 Which of the following cations has the maximum number of unpaired electrons? A. Mn2+ B. Fe2+ C. Co3+ D. Ni2+ 02 The molecular shape and electron pair geometry of XeO2F2, respectively, are: A. See-saw and trigonal bipyramidal B. Square planar and tetrahedral C. Trigonal bipyramidal and see-saw D. Tetrahedral and square planar 03 Identify the pair of elements which have the largest difference in electronegativity. A. B and Al B. B and C C. Be and Al D. Al and C 04 What is the percentage atom economy for the production of ammonia in the reaction between ammonium sulfate and sodium hydroxide? (N = 14, O = 16, S = 32, H = 1, Na = 23) (NH4)2SO4 (s) + 2NaOH(aq)  2NH3(g) + Na2SO4(aq) + 2H2O(l) A. 8.0 B. 9.8 C. 16.0 D. 4.0 05 The increasi