AQA Jun 2017 Paper 1 Q7

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14Solution A contains the compound [Cu(H2O)6]Cl2 State the type of bonding between the oxygen and hydrogen in this compound. [1 mark] 0 7 0 7 . 1 0 7 . 2 State why the chloride ions in this compound are not considered to be ligands. [1 mark] 0 7 . 3 An excess of ammonia was added to a sample of solution A to form solution B. Write an ionic equation for the reaction that occurs when solution A is converted into solution B and state the colour of solution B. [2 marks] Equation Colour 0 7 . 4 Aqueous sodium carbonate was added to another sample of solution A to form a blue-green solid C. Identify the blue-green solid C. [1 mark] 0 7 . 5 Reagent D was added to another sample of solution A to form a yellow-green solution. Identify reagent D and write an ionic equation for the reaction that occurs when the yellow-green solution is formed from solution A. [2 marks] Identity of reagent D Equation *14* IB/M/Jun17/7405/1<br /> 0 7 . 6 15Explain why colorimetry cannot be used to determine the concentration of solutions containing [CuCl2] In your answer refer to the electron configuration of the metal ion. [2 marks] Turn over for the next question *15* Turn overIB/M/Jun17/7405/1<br />

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