Question

Using a platinum wire, cone, hydrochloric acid and a Bunsen burner how would you distinguish between the three salts e. sodium chloride, potassium chloride and calcium chloride. Explain in brief the method used for the same.

Answer 1

Application of flame test – to identify the metal in the substance.

Method	Colour imparted to the flame	Colour-through blue glass	Metallic radical
Thin platinum wire is throughly cleaned and of a burner.	Golden yellow	Pale yellow	Sodium[Na1+]
When the wire imparts no colour it is dipped in conc. HCl and then -	Lilac	Violet	Potassium [K1+]
The wire is then reintroduced into the - non-luminous flame and the-colour imparted is noted.	Brick red	Pale grren	Calcium [Ca2+]