IJC_H2_CHEM_P2

INNOVA JUNIOR COLLEGE JC 2 PRELIMINARY EXAMINATION 2 in preparation for General Certificate of Education Advanced Level Higher 2 CANDIDATE NAME CLASS INDEX NUMBER CHEMISTRY Paper 2 Structured Candidates answer on the Question Paper Additional Materials: Data Booklet 9746/02 24 September 2009 1 hour 30 minutes READ THESE INSTRUCTIONS FIRST Write your index number, name and civics group on all the work you hand in. Write in dark blue or black pen. You may use pencil for any diagrams, graphs or rough working. Do not use staples, paper clips, highlighters, glue or correction fluid. Answer all questions in the space provided. A Data Booklet is provided. For Examiner’s Use 1 11 2 11 3 12 4 11 5 15 Total 60 You are advised to show all working in calculations. You are reminded of the need for good English and clear presentation in your answers. You are reminded of the need for good handwriting. Your final answers should be in 3 significant figures. You may use a calculator. The number of marks is given in brackets [ ] at the end of each question or part question. At the end of the examination, fasten all your work securely together. This document consists of 14 printed pages. Innova Junior College [Turn ove

PRELIM 2  INNOVA 9746/02/09 [Turn Over 2 For Examiner’s Use Answer ALL questions on the space provided. 1 2 identical gas syringes A and B, each with a volume of 200 cm 3 are filled with a volatile liquid which behaves as an ideal gas in vapour state. 1 g and 2 g of the liquid is placed in gas syringes A and B respectively and warmed. When the temperature reaches 60 °C, all the liquid evaporate in gas syringe A and the pressure is 80 kPa. (a) (i) Calculate the temperature in gas syringe A when the pressure is 120 kPa. (ii) Calculate the temperature when all the liquid evaporates in gas syringe B when the pressure is 120 kPa. (iii) Calculate the relative molecular mass of the gas. [4] (b) A student wrote the following in his notebook: “Potassium chloride has a very high boiling point while tetrachloromethane boils below 100 °C. This shows that ionic bond is stronger than covalent bond.” Do you agree with the above statement? ....................................................................................................................................... ....................................................................................................................................... ................................................