AS Level Chemistry A H032/01 Breadth in chemistry Sample Question Paper ALL ANSWERS 100% CORRECT SPRING FALL-2022 LATEST GUARANTEED GRADE A+

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SECTION A You should spend a maximum of 25 minutes on this section. Answer all the questions. 1 How many electrons are in a 24Mg2+ ion? A 10 B 12 C 14 D 22 Your answer [1] 2 What is the form... ula of chromium(III) sulfate? A Cr3SO4 B Cr(SO4)3 C Cr2(SO4)3 D Cr3SO3 Your answer [1] 3 Which molecule is non-polar? A SF6 B H2S C PF3 D NH3 Your answer [1]3 © OCR 2021 H032/01 Turn over 4 Which row is correct? A B C D Your answer [1] 5 Which equation represents a redox reaction? A Mg + 2HCl → MgCl2 + H2 B MgO + 2HCl → H2O + MgCl2 C MgCO3+ 2HCl → CO2 + H2O + MgCl2 D Mg(OH)2 + 2HCl → MgCl2 + 2H2O Your answer [1] 6 This question is about trends in the periodic table. Which trend is correct? A melting point decreases from lithium to carbon B boiling point decreases from fluorine to iodine C first ionisation energy decreases from lithium to caesium D first ionisation energy increases from nitrogen to oxygen Your answer [1] Highest pH when added to water Most reactive halogen MgO F2 MgO I2 BaO F2 BaO I24 © OCR 2021 H032/01 7 A sample of a compound M contains 1.46 g of carbon, 0.482 g of hydrogen and 1.69 g of nitrogen. What is the empirical formula of M? A CH2N B C4HN4 C CH4N D C2H4N Your answer [1] 8 A student mixes 100 cm3 of 0.200 mol dm–3 NaCl(aq) with 100 cm3 of 0.200 mol dm–3 Na2CO3(aq). What is the total concentration of Na+ ions in the mixture formed? A 0.100 mol dm–3 B 0.200 mol dm–3 C 0.300 mol dm–3 D 0.400 mol dm–3 Your answer [1] 9 Which mass of substance contains the greatest number of atoms? A 3.00 g of ammonia, NH3 B 3.00 g of chloromethane, CHCl3 C 4.00 g of hydrogen sulfide, H2S D 4.00 g of hydrogen chloride, HCl Your answer [1]5 © OCR 2021 H032/01 Turn over 10 Which reagent would exactly neutralise 100 cm3 of 1.00 mol dm–3 H2SO4(aq)? A 0.100 mol Al(OH)3 B 0.100 mol NH3 C 0.100 mol Ba(OH)2 D 0.100 mol NaOH Your answer [1] 11 The table below shows standard enthalpy changes of formation, ∆fH [Show More]

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