TJC_H2_CHEM_P1_QN Prelim

1 9647/01/TJC Prelim 2014 [Turn Over CHEMISTRY 9647/01 Paper 1 Multiple Choice Thursday 18th September 2014 1 hour Candidates answer on separate paper. Additional materials: Multiple Choice Answer Sheet Data Booklet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name, Civics Group and index number on the Answer Sheet in the spaces provided unless this has been done for you. There are forty questions on 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 an swer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet. This document consists of 15 printed pages and 1 blank page

2 9647/01/TJC Prelim 2014 [Turn Over Section A For each question there are four possible answers, A, B, C and D. Choose the one you consider to be correct. 1 In an experiment, 10 cm 3 of a solution containing a known concentration of iodate(V) ions, IO3 -, was run into an acidified solution containing an excess of iodide ions. IO3 - (aq) + 5I- (aq) + 6H+ (aq)  3H2O (l) + 3I2 (aq) The iodine liberated was found on titration to react with exactly 30 cm 3 of 0.1 mol dm -3 of sodium thiosulfate solution. What was the concentration of the iodate(V) ions? A 0.05 B 0.10 C 0.15 D 0.20 2 How will the volume of a 1.0 dm 3 sample of gas change when it is heated from 20 C to 80 C at constant pressure? A Increase to about 4.0 dm3 B Increase to about 1.2 dm3 C Decrease to about 0.5 dm3 D Decrease to about 0.2 dm3 3 An element shows oxidation states of +4 and +6 in forming compounds with both fluorine and oxygen. What is the most likely outer electronic configuration for the element? A 2s22p4 B 2s22p6 C 3s23p4 D 3s23p6

3 9647/01/TJC Prelim 2014 [Turn Over 4 Dilute sulfuric acid was added to aqueous barium hydroxide until the acid was in excess. Which graph shows the variation in the total number of ions in solution? A B C D 5 Aqueous acidified potassium mangan ate(VII) is used to oxidise iron(II) ethanedioate, FeC2O4, to Fe3+ and CO2. What is the co