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The flame test method of analysis can be used to distinguish between A - VCE - SSCE Chemistry - Question 1 - 2006 - Paper 1
Question 1
The flame test method of analysis can be used to distinguish between A. methanol and ethanol. B. sulfuric acid and nitric acid. C. lithium nitrate and calcium nitrat... show full transcript
Worked Solution & Example Answer:The flame test method of analysis can be used to distinguish between A - VCE - SSCE Chemistry - Question 1 - 2006 - Paper 1
Step 1
C. lithium nitrate and calcium nitrate.
Answer
The flame test is a qualitative analysis technique used to identify the presence of certain metal ions based on the color they produce when heated in a flame. In this case, lithium nitrate and calcium nitrate can be distinguished using the flame test.
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Lithium Nitrate: When lithium ions are heated in a flame, they produce a striking crimson red flame. This distinct color is characteristic of lithium salts and serves as a clear indicator.
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Calcium Nitrate: On the other hand, calcium ions produce a brick red flame. This color can sometimes be confused with other colors, but it is still distinguishable from lithium's red flame.
Thus, the flame test can effectively distinguish between lithium nitrate (crimson red) and calcium nitrate (brick red).