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2 marksAcids, Bases and Salts

CSEC Chemistry · May/June 2011 · Paper 2 · Question 4(a)(ii)

Potassium carbonate (K₂CO₃) and zinc metal (Zn) are treated with excess dilute nitric acid in separate experiments.

Outline a method that can be used to obtain a solid sample of a salt where EITHER the K₂CO₃ OR Zn completely reacts with the dilute nitric acid as described in (a) (i) above.

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  1. 4(a)(i)State the expected observations and write balanced chemical equations to explain any reactions that take place. Give the chemical test(s) which may be used to…[10 marks]
  2. 4(b)Explain the observations expected for EACH part.[3 marks]

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