1. An unknown solution gave a strong yellow flame test. The solution gave no rea

Question

1. An unknown solution gave a strong yellow flame test. The solution gave no reaction with ammonium carbonate, ammonium phosphate, or ammonium sulfate. The halide test produced a yellow-orange color in the hexane layer. What is the alkali or alkaline earth element, and the halide in the unknown solution?       2. An unkown solution gave a bright red flame test. The solution produced a white precipitate with Ammonium carbonate, ammonium phosphate, and ammonium sulfate. The halide test produced a purple color in the hexane layer. What is the alkali or alkaline earth metal element, and the halide in the unknown solution?                                                                                                                                                                                                                                  

Explanation / Answer

1. From the given tests we can conclude the metal as Lithium

Halide is iodine

So the alkali metal compound : LiI (lithium iodide)

2. From the given tests we can conclude that the metal is Calcium

Halide is iodine

so the compound here would be CaI2

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