Inorganic Qualitative Analysis: Anions, Cations and Salts

Name: Inorganic Qualitative Analysis: Anions, Cations and Salts
Author: StemPy Lab

How a chemist names a salt from what happens in a test tube.

We test ten anions with dilute and concentrated sulphuric acid.
The group reagents sort the cations, and a confirmatory test names each of twelve cations.
Solubility products explain why the scheme works.

3 lessons, about 1 h 25 min3 simulations10 problems3 practice questionsPython in every lesson

Course outline (3 lessons)

Lesson 1about 30 min
Testing for anions
A chemist is given a white salt and a test tube. Which anion is in it? Dilute acid frees some anions as gases. Concentrated acid frees others. A few ions need their own test. This lesson sets out the tests for ten anions and the colour or smell that each gives.
1 simulation1 practice question1 Python program3 problems1 Python lab
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Lesson 2about 30 min
Testing for cations group by group
A solution may hold several cations at once. A chemist does not test for each one in the mixture. Instead, group reagents drop out the ions in sets. This lesson sets out the scheme and the confirmatory test for each of twelve cations.
1 simulation1 practice question1 Python program4 problems1 Python lab
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Lesson 3about 25 min
Why the group reagents work, and naming a salt
Why does hydrogen sulphide in acid precipitate copper but not zinc? Why does ammonium chloride keep magnesium in solution? The answer is the solubility product. This lesson also shows how to name a salt from a table of observations.
1 simulation1 practice question1 Python program3 problems1 question set1 note
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JEE Main format10 questions · 25 min

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