Page 2. Q1.Which of these species is the best reducing agent? A Cl 2 C I 2
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1 Q1.Which of these species is the best reducing agent? l 2 l I 2 I Q2.Which of these substances reacts most rapidly to produce a silver halide precipitate with acidified silver nitrate? H 3r H 3l H 3F H 3l Q3.Which one of the following is the electron arrangement of the strongest reducing agent? 1s 2 2s 2 2p 5 1s 2 2s 2 2p 6 3s 2 1s 2 2s 2 2p 6 3s 2 3p 5 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 PhysicsndMathsTutor.com Page 2
2 Q4.Which one of the following statements is correct? The first ionisation energies of the elements in Period 3 show a general decrease from sodium to chlorine. The electronegativities of Group 2 elements decrease from magnesium to barium. The strength of the intermolecular forces increases from hydrogen fluoride to hydrogen chloride. The ability of a halide ion to act as a reducing agent decreases from fluoride to iodide. Q5.Which one of the following reactions does not involve donation of an electron pair? H + + H 3NH 2 H 3NH ll 3 + l 11 H 3l + N H 3N + l l 2 + I l + I 2 Q6.The boiling points of the halogens increase down Group VII because covalent bond strengths increase. bond polarities increase. the surface areas of the molecules increase. electronegativities increase. PhysicsndMathsTutor.com Page 3
3 Q7.n aqueous solution of a sodium salt gave no precipitate when treated with either silver nitrate solution or barium chloride solution. Which one of the following could be the formula of the sodium salt? NaI Na 2SO 4 Nar NaF Q8.On heating, magnesium reacts vigorously with element X to produce compound Y. n aqueous solution of Y, when treated with aqueous silver nitrate, gives a white precipitate that is readily soluble in dilute aqueous ammonia. What is the minimum mass of X that is needed to react completely with 4.05 g of magnesium? g 5.92 g 5.33 g 2.67 g Q9.Which one of the following can act as an oxidising agent but not as a reducing agent? H 3HO Fe 2+ I MnO PhysicsndMathsTutor.com Page 4
4 Q10.Which one of the following statements concerning halogen chemistry is true? Sodium chloride produces chlorine when treated with concentrated sulphuric acid. Sodium chloride produces chlorine when treated with bromine. Sodium bromide produces bromine when treated with concentrated sulphuric acid. Sodium bromide produces bromine when treated with iodine in aqueous potassium iodide. Q11.n aqueous solution of a white solid gives a yellow precipitate with aqueous silver nitrate. The formula of the white solid could be gr gi Nar NaI Q12.What will you see when a solution of silver nitrate is added to a solution containing bromide ions, and concentrated aqueous ammonia is added to the resulting mixture? a white precipitate soluble in concentrated aqueous ammonia a white precipitate insoluble in concentrated aqueous ammonia a cream precipitate soluble in concentrated aqueous ammonia a yellow precipitate insoluble in concentrated aqueous ammonia PhysicsndMathsTutor.com Page 5
5 Q13.Which one of the following statements is true? blue solution containing the ion [ol 4] 2 turns pink when added to an excess of water. purple solution is formed when chlorine is bubbled into aqueous sodium bromide. yellow precipitate is formed when aqueous silver nitrate is added to aqueous sodium chloride. green solution containing the ion [ul 4] 2 turns blue when added to an excess of concentrated hydrochloric acid. Q14.In which one of the following reactions does the metal species undergo reduction? MnO 2 + 4Hl Mnl 2 + 2H 2O + l 2 [u(h 2O) 6] l [ul 4] 2 + 6H 2O ro + 2OH 2rO + H 2O TiO l 2 Til 4 + 2O Q15. white salt dissolves in water to give a solution which gives a cream coloured precipitate when aqueous silver nitrate is added. This precipitate is insoluble in dilute aqueous ammonia but is soluble in concentrated aqueous ammonia. The original white salt could be gi NaI gr Nar PhysicsndMathsTutor.com Page 6
6 Q16.When vanadium reacts with chlorine at 400, a brown compound is obtained. When an aqueous solution containing g of this compound was treated with aqueous silver nitrate all the chlorine in the compound was precipitated as silver chloride. The mass of silver chloride (gl) produced was g. Which one of the following could be the formula of the brown compound? Vl Vl 2 Vl 3 Vl 4 Q17.The reaction between sodium iodide and concentrated phosphoric acid produces hydrogen iodide but no iodine. The reaction of sodium iodide with concentrated sulphuric acid produces mainly iodine. The difference in product occurs because, in comparison with sulphuric acid, phosphoric acid is the weaker acid. the stronger oxidising agent. the weaker oxidising agent. the stronger reducing agent. Q18.Which one of the following is not a correct trend down Group VII? The first ionisation energy of the atom decreases. The oxidising power of the element increases. The electronegativity of the atom decreases. The boiling point of the element increases. PhysicsndMathsTutor.com Page 7
7 Q19.Which one of the following statements is true? romine liberates iodine from aqueous sodium iodide. hlorine liberates fluorine from aqueous sodium fluoride. Silver iodide is soluble in aqueous ammonia. oncentrated sulphuric acid liberates chlorine from solid sodium chloride. PhysicsndMathsTutor.com Page 8
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