Identify the salts $P$ and $Q$ from the observations given below:
On performing the flame test salt $P$ produces a lilac coloured flame and its solution gives a white precipitate with silver nitrate solution, which is soluble in Ammonium hydroxide solution.

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Solution

On performing the flame test salt $P$ produces a lilac coloured flame. This indicates potassium salt.
Its solution gives a white precipitate with silver nitrate solution, which is soluble in Ammonium hydroxide solution. This indicates presence of chloride ion.
$K C l + A g N O_{3} \to A g C l ↓ white ppt + K N O_{3}$
$A g C l + 2 N H_{4} O H \to [A g (N H_{3})_{2} C l] + 2 H_{2} O soluble complex$
Hence, the salt $P$ is potassium chloride.

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Identify the salts P and Q from the observations given below:On performing the flame test salt P produces a lilac coloured flame and its solution gives a white precipitate with silver nitrate solution, which is soluble in Ammonium hydroxide solution.

Identify the salts $P$ and $Q$ from the observations given below:
On performing the flame test salt $P$ produces a lilac coloured flame and its solution gives a white precipitate with silver nitrate solution, which is soluble in Ammonium hydroxide solution.