solution containing 0.193 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 (AgCl) produced was 0.574 g. Which one of the following could be the formula of the brown compound? A VCl B VCl2 C VCl3 VCl4 D (Total 1 mark) 10. one of the following is not a correct trend down Group VII? A The first ionisation energy of the atom decreases. B The oxidising power of the element increases. C The electronegativity of the atom decreases. D The boiling point of the element increases. (Total 1 mark) 11. A 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 A AgI NaI B C AgBr D NaBr (Total 1 mark) In which one of the following reactions does the metal species undergo reduction? 12. A MnO2 + 4HCl MnCl2 + 2H2O + Cl2 → B [Cu(H2O)6]2++ 4Cl− [CuCl4]2− + 6H2O → C Cr2O + 2OH− 2CrO + H2O → D TiO2 + 2C + 2Cl2 TiCl4 + 2CO → (Total 1 mark)
solution containing 0.193 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 (AgCl) produced was 0.574 g. Which one of the following could be the formula of the brown compound? A VCl B VCl2 C VCl3 D VCl4 (Total 1 mark) 10. one of the following is not a correct trend down Group VII? A The first ionisation energy of the atom decreases. B The oxidising power of the element increases. C The electronegativity of the atom decreases. D The boiling point of the element increases. (Total 1 mark) 11. A 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 A AgI B NaI C AgBr D NaBr (Total 1 mark) 12. In which one of the following reactions does the metal species undergo reduction? A MnO2 + 4HCl → MnCl2 + 2H2O + Cl2 B [Cu(H2O)6]2++ 4Cl− → [CuCl4]2− + 6H2O C Cr2O + 2OH− → 2CrO + H2O D TiO2 + 2C + 2Cl2 → TiCl4 + 2CO (Total 1 mark)
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