A museum conservator analyzing an ancient ceramic glaze suspects it contains a mixture of sodium and potassium compounds. When they perform a standard flame test on a sample of the glaze, the intense yellow flame of the sodium ions completely masks any other flame colour.
Describe how the conservator could show that both sodium ions (Na+\text{Na}^+Na+) and potassium ions (K+\text{K}^+K+) are present in the glaze sample.
Practise Edexcel GCSE Chemistry Qualitative analysis: tests for ions with exam-style questions for Foundation and Higher tier. 127 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
