Question

How do You Identify a Salt?

Answer 1

To identify a salt:

A salt is combination of positive ion(cation) and negative ion(anion). An atom which electron are anions while which looses electron are cations.

• Appearance of the compound- According to the properties of salts, salts are white in color but d block elements shows color because they have d-d transition between them.${\mathrm{Cr}}^{3+}\mathrm{shows}\mathrm{violet}\mathrm{color}\mathrm{and}{\mathrm{Co}}^{2+}\mathrm{shows}\mathrm{pink}\mathrm{color}$.
• Flame test- The color of the flame indicate to which atom the salt belongs.
• Reaction with Hydrochloric acid- Hydrochloric acid is added dropwise, the precipitate formed indicate the salts.
• Sieve analysis- The salt is identified by checking out its granules.

Thus, the salt can be identified by using following methods.