2022 Prelim P1 QP

© Raffles Institution 2022 9729/01/S/22 [Turn Over RAFFLES INSTITUTION 2022 YEAR 6 PRELIMINARY EXAMINATION Higher 2 CHEMISTRY 9729/01 Paper 1 Multiple Choice 22 September 2022 1 hour Additional Materials: Multiple Choice Answer Sheet Data Booklet READ THESE INSTRUCTIONS FIRST Do not open this question booklet until you are told to do so. Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your name, class and index number in the spaces provided on the Answer Sheet. There are thirty questions in this paper. Answer all questions. For each question there are four possible answers A, B, C and D. Choose the one you consider correct and record your choice in soft pencil on the separate Answer Sheet. Read the instructions on the Answer Sheet very carefully. Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in the question booklet. The use of an approved scientific calculator is expected, where appropriate. This document consists of 14 printed pages.

© Raffles Institution 2022 9729/01/S/22 [Turn Over 2 1 Use of the Data Booklet is relevant to this question. Which statement is correct? A 2 mol of (NH4)2Fe(SO4)2 has the same number of ions as 4 mol of K2Cr2O7. B 46 g of nitrogen dioxide gas contains the same number of molecules as 14 g of nitrogen gas. C The number of electrons in 1 mol of nitrogen gas is the same as that in 1 mol of carbon monoxide gas. D The number of atoms in a 5 dm 3 sample of oxygen gas is half that of a 10 dm 3 sample of argon gas at the same temperature and pressure. 2 Use of the Data Booklet is relevant to this question. Bronze is an alloy of copper and tin. The following information is obtained for a sample of bronze. mass number 63 65 118 % composition d 88 – d 12 Naturally occurring copper contains only two isotopes, 63Cu and 65Cu. Given the r atio of 63Cu and 65Cu in naturally occurring copper is the same as th at in bronze, what is the value of d? A 22 B 25 C 66 D 75 3 Use of the Data Booklet is relevant to this question. Which statements regarding the ions 30Si4+, 31P3− and 32S2− are correct? 1 They contain the same number of neutrons. 2 They have the same electronic configuration. 3 Their ionic radii increase in the order 30Si4+ < 31P3− < 32S2−. A 1 only B 1 and 2 C 1 and 3 D 2 and 3

© Raffles Institution 2022 9729/01/S/22 [Turn Over 3 4 A beam containing a mixture of three ions, P, Q and R, approaches an electric field with oppositely charged plates at the same velocity. The identities of the three ions could be 11C3+, 15O2+, 7Li2− and 15N4−. Which ion is Q? A 11C3+ B 15O2+ C 7Li2− D 15N4− 5 Use of the Data Booklet is relevant to this question. The first four ionisation energies, IE, of four Period 5 elements, indium,