Edexcel Jan 2016 (IAL) Paper 3 Q1

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Answer ALL the questions. Write your answers in the spaces provided. 1 A series of tests is carried out on a white solid, J, which is a mixture of two compounds. One compound contains a Group 1 cation, and the other a Group 2 cation. The two compounds contain the same anion. (a) Complete the labels A and B in the diagram below, which shows the procedure and result for a flame test on solid J. (2) red flame solid J Bunsen burner D O N O T W R I T E I N T H I S A R E A D O N O T W R I T E I N T H I S A R E A D O N O T W R I T E I N T H I S A R E A Awire solid J watch glass B(b) It is known that the Group 2 cation in J gives no colour in a flame test, so the red colour seen must be due to the Group 1 cation. Give the name or formula of the Group 1 cation, which is responsible for the red colour observed in the flame test, and give the name or formula of the Group 2 cation. (2) Group 1 cationGroup 2 cation*P46939A0220*<br /> (c) Dilute hydrochloric acid is added to a sample of J. J dissolves in the acid but there is no other change. (i) If J contained a carbonate anion, what would be the observation on the addition of dilute hydrochloric acid? (1)(ii) Give the name or formula of another anion which would produce the same observation with dilute hydrochloric acid as the carbonate anion. (1)A E R A S I H T N I E T I R W T O N O D (iii) Aqueous barium chloride is then added to the solution of J in hydrochloric acid. A white precipitate forms. Give the formulae for the two salts present in J. (2) A E R A S I H T N(Total for Question 1 = 8 marks) I E T I R W T O N O D A E R A S I H T N I E T I R W T O N O D *P46939A0320* Turn over<br />

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