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(a) The Latimer diagram for europium in acidie solution is as follows: -0.35 2.80 chemist wants to prepare an Eu solution. As a starting material he has a colourless acidic solution of Eu and two possible reducing agents: Zn turnings (Zn2+/Zn -0.76V) and a solution of stannous chloride (Sn/Sn2 0.15) (i) Explain which reducing agent you would use and give the appropriate equations. (8 marks)

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3ナ a beten nede 3 fennon sse 2t Zn 2t ユナ

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