Salt Analysis Class 12 Practical PDF

Salt Analysis Class 12 Practical PDF Details
PDF Name	Salt Analysis Class 12 Practical PDF
No. of Pages	26
PDF Size	0.74 MB
Language	English
Category	English
Source	stjohnsschoolkota.edu.in
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Salt Analysis Class 12 Practical

Dear reader, if you are searching for Salt Analysis Class 12 Practical PDF and you are unable to find it anywhere then don’t worry you are on the right page. The salt analysis involves the identification of the cation and anion of an inorganic salt. This is completed by directing a series of tests in a systematic manner and using the examination to prove the absence or existence of specific cations and anions.

The salt analysis is an integral part of the Central Board of Secondary Education (CBSE) Class 12 Chemistry practical exams and is a matter that several students struggle with. In the exams, candidates will obtain an inorganic salt whose chemical composition they should identify. This can be done by separately identifying the cation and the anion of the salt.

Salt Analysis Class 12 Practical PDF – Process

1. Obtain the inorganic salt whose cation and anion you must identify.
2. Conduct preliminary tests for the anion group-wise until you obtain a positive result. Anions and cations are classified into groups that share the same group reagent and therefore, have similar preliminary tests.
3. Once you get a positive result for a preliminary test for an anion, conduct a confirmatory test for that anion.
4. Conduct preliminary tests for cations group-wise until you obtain a positive result.
5. Once a positive result is obtained, conduct a confirmatory test for that cation.
6.  Now that the cation and the anion are identified, obtain the chemical formula of the salt by balancing the charges of the cation and anion. For example, if your cation is Fe³⁺ and your anion is Cl^–, the chemical formula of the salt will be FeCl₃.

Salt Analysis Class 11 Practical PDF- Short Notes

Tricks and Shortcuts for Salt Analysis

Always check the colour of the salt first. Certain cations have coloured salts. If the salt is coloured, you can directly conduct a preliminary test for the cation that forms salts of that colour. The cations that form coloured salts are tabulated below:

Colour of the Inorganic Salt	Cation
Blue	Cu2+
Deep blue	Co2+ (anhydrous salt)
Greenish-blue	Cu2+ (hydrated salt)
Green	Ni2+ (hydrated salt)
Light green	Fe2+
Yellow, brown, or yellowish-brown	Fe3+
Pale pink	Mn2+
Rose-red	Co2+ or mercuric iodide (HgI2)
Purple or dark green	Cr3+

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