SASS Chem P1 Revision

Page 1 ST ANDREW’S SECONDARY SCHOOL NAME CLASS CHEMISTRY 6092/01 Paper 1 REVISION PACKAGE + MULTIPLE CHOICE QUESTIONS 1 2 3 4 © UCLES 2010 9791/01/M/J/10 9 The diagram represents the energy changes for some reactions. ∆H = –130 kJ mol–1 ∆H = –25 kJ mol–1 ∆H = +80 kJ mol–1 W Y X Z What are the natures of the conversions W → Y, Y → X and Z → W? W → Y Y → X Z → W A exothermic endothermic endothermic B exothermic exothermic endothermic C endothermic exothermic exothermic D endothermic endothermic exothermic 10 The diagram shows the energy profile for a reaction both with and without a catalyst present. What is the activation energy of the uncatalysed reverse reaction? energy reactants progress of reaction A B C D products 11 T h e m e t a l n i o b i u m , N b , h a s a r e l a t i v e a t o m i c m a s s o f 9 2 . 9 a n d i s u s e d i n v a r i o u s s t a i n l e s s s t e e l alloys. It is made by reducing niobium chloride with sodium. In this reaction, 54.08 g of niobium chloride produces 18.58 g of niobium. What is the formula of the niobium chloride used? A NbCl 2 B NbCl 3 C NbCl 4 D NbCl 5 4 4 © UCLES 2010 9791/01/M/J/10 9 The diagram represents the energy changes for some reactions. ∆H = –130 kJ mol–1 ∆H = –25 kJ mol–1 ∆H = +80 kJ mol–1 W Y X Z What are the natures of the conversions W → Y, Y → X and Z → W? W → Y Y → X Z → W A exothermic endothermic endothermic B exothermic exothermic endothermic C endothermic exothermic exothermic D endothermic endothermic exothermic 10 The diagram shows the energy profile for a reaction both with and without a catalyst present. What is the activation energy of the uncatalysed reverse reaction? energy reactants progress of reaction A B C D products 11 T h e m e t a l n i o b i u m , N b , h a s a r e l a t i v e a t o m i c m a s s o f 9 2 . 9 a n d i s u s e d i n v a r i o u s s t a i n l e s s s t e e l alloys. It is made by reducing niobium chloride with sodium. In this reaction, 54.08 g of niobium chloride produces 18.58 g of niobium. What is the formula of the niobium chloride used? A NbCl 2 B NbCl 3 C NbCl 4 D NbCl 5 4 12 © UCLES 2010 9791/01/M/J/10 33 1 2 . 5 cm3 of 0.0500 mol dm–3 sodium hydroxide is added to 25.0 cm3 of 0.100 mol dm–3 hydrochloric acid. Which concentration of hydrochloric acid remains in the reaction mixture? A 0 . 0 0 1 9 mol dm–3 B 0.0333 mol dm–3 C 0.0500 mol dm–3 D 0.0750 mol dm–3 34 Which mixture of gaseous oxygen and nitrogen would occupy 0.12 dm3 at room temperature and pressure? A 0 . 0 3 2 g O2 and 0.084 g N2 B 0 . 0 9 6 g O2 and 0.028 g N2 C 0 . 0 9 6 g O2 and 0.056 g N2 D 0.096 g O2 and 0.084 g N2 35 The mass spectrum of CH2F2 would not contain a peak at which m / z value? A 14 B 19 C 38 D 52 36 In the absence of reference spectra, infra-red spectr