A technician had two bottles, each containing a solid. The labels had fallen off the bottles. The two labels were: sodium sulfate potassium chloride The technician carried out the following tests. (i) A flame test was carried out on each solid. One solid produced a yellow colour in the Bunsen flame. Give the name of the ion that produces this yellow colour. (ii) Describe how to carry out a flame test on a solid.

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A technician had two bottles, each containing a solid - Edexcel - GCSE Chemistry - Question 2 - 2013 - Paper 1

Question 2

A technician had two bottles, each containing a solid. The labels had fallen off the bottles. The two labels were: sodium sulfate potassium chloride The technician... show full transcript

Worked Solution & Example Answer:A technician had two bottles, each containing a solid - Edexcel - GCSE Chemistry - Question 2 - 2013 - Paper 1

Step 1

(i) Give the name of the ion that produces this yellow colour.

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Answer

The ion that produces a yellow flame during the flame test is sodium ion, which can be represented as Na+ or sodium.

Step 2

(ii) Describe how to carry out a flame test on a solid.

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Answer

To carry out a flame test, follow these steps:

CLEAN: Clean the flame test wire with hydrochloric acid to remove any contaminants.
SAMPLE: Put the wire into the solid to obtain a sample of the compound.
TEST: Hold the wire in the Bunsen flame and observe the color produced. Ensure you see a yellow flame for sodium.

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