Question

Class 11 salt analysis

I have practicals tomorrow..
It's urgent......​

Answer 1

Step 1: Obtain the inorganic salt whose cation and anion you must identify.

Step 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.

Step 3: Once you get a positive result for a preliminary test for an anion, conduct a confirmatory test for that anion. (If you get a positive result, move on to step 4. If you don’t, go back to conducting preliminary tests for anions.)

Step 4: Conduct preliminary tests for cations group-wise until you obtain a positive result.

Step 5: Once a positive result is obtained, conduct a confirmatory test for that cation.

Step 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

Answer 2

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♠️What is salt analysis?

→Salt analysis (also known as systematic qualitative analysis or qualitative inorganic analysis) involves the identification of the cation and anion of an inorganic salt. This is done by conducting a series of tests in a systematic manner and using the observations to confirm the absence or presence of specific cations and anions. Salt analysis is an integral part of the CBSE class 12 chemistry practical examinations and is a topic that several students struggle with. Therefore, we at BYJU’S have channelled our efforts into explaining this topic in a manner that is easy to understand and remember. If questions like “How to do salt analysis?” and “How to remember salt analysis procedures easily?” are puzzling you, look no further! This article also touches on certain tricks and shortcuts that students can employ to quickly analyze their assigned salts in their chemistry practical examinations.

In the examination, students will receive an inorganic salt whose chemical composition they must identify. This can be done by individually identifying the cation and the anion of the salt.

♠️Step-by-Step Process for Salt Analysis

Step 1: Obtain the inorganic salt whose cation and anion you must identify.

Step 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.

Step 3: Once you get a positive result for a preliminary test for an anion, conduct a confirmatory test for that anion. (If you get a positive result, move on to step 4. If you don’t, go back to conducting preliminary tests for anions.)

Step 4: Conduct preliminary tests for cations group-wise until you obtain a positive result.

Step 5: Once a positive result is obtained, conduct a confirmatory test for that cation.

Step 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.

Note: You can also identify the cation first and then move on to identifying the anion.

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