Analysis of Ammonium Sulphate
Ammonium Sulphate Chemical Composition:
In this post analysis of Ammonium sulphate, lets firstly understand composition of Ammonium sulphate, a colorless crystal solid with the chemical formula (NHâ‚„)â‚‚ SOâ‚„, has a rich history and diverse applications in various fields.
First synthesized in the 1800s, this inorganic salt is derived from ammonia and sulfuric acid and boasts versatility that has made it a fundamental element in multiple industries, ranging from agriculture to food production.
NH3 + H2SO4 → (NH4)2SO4
Role of Ammonium Sulphate in Plant Nutrition:
In this post analysis of Ammonium sulphate, lets dig into the role in plant nutrition. One of its primary uses is as a fertilizer, particularly valued in alkaline soils due to its ability to lower pH levels and increase the accessibility of nutrients for plants.
By providing a vital source of nitrogen, essential for plant growth, ammonium sulphate aids in the healthy development of crops, ultimately resulting in increased yield and quality.
Its use spans across a wide range of crops, including cereals, vegetables, and fruit trees, showcasing its crucial role in sustainable agriculture.
Beyond its use in farming, it also plays a critical role in the food industry, serving as both a food additive and leavening agent. In baking, it enhances the color and texture of bread, resulting in a satisfying rise and a perfectly golden crust.
Also, in water treatment, it aids in the precipitation of impurities, purifying drinking water and ensuring consumer safety.
In the field of biochemical research, ammonium sulphate is an integral part of protein purification. Its ability to precipitate proteins at varying concentrations allows for the isolation of specific proteins for further study or pharmaceutical use.
This application highlights the compound’s significance in advancing scientific understanding and innovation. From boosting agricultural productivity to its functions in food production and scientific research.
Ammonium sulphate serves as a testament to the extraordinary utility of chemical compounds. Its versatility and multifaceted nature make it a valuable resource in numerous sectors, supporting growth, promoting health, and driving innovation.
Qualitative Analysis of Ammonium Sulphate
In Analysis of Ammonium Sulphate (qualitative inorganic analysis) a step-by-step method is employed in detecting the cation (Ammonium ions) and anion (Sulphate ions) in the inorganic salt.

Analysis of Acidic Radicals (Anion)
| Test | observation | Inference |
|---|
Preliminary Test
| Color | Colorless | Salts of Cu2+, Ni2+, Co3+, CrO4 2- , Fe3+ etc. may be absent |
| Odor | Ammoniacal odor | NH4 1+ ions may be present |
Dry Test
| Dilute Sulphuric acid test: Take 0.5 gm of Salt and then add Dilute H2SO4 | No Effervescence of CO2 | CO3 2- ions absent |
| Concentrated Sulphuric Acid Test: Take 0.5 gm of salt and then add Concentrated H2SO4 dropwise from the side of the test tube | No gas evolved | Cl1-, Br1-, NO2 1-, CH3COO 1- ions absent |
| Barium Chloride Test: Take 0.2 gm of salt and add BaCl2 Solution | White Crystalline ppt. | SO4 2- Ions present |
Confirmative test for Sulphate ions
| BaCl2 Test: Take 0.5 gm of Salt and add BaCl2 Solution | White crystalline ppt. insoluble in dilute HCl | SO4 2- Ions confirmed |
| Lead Acetate test: Take 0.5 gm of the salt and add Lead Acetate Solution. | White precipitates are formed which are soluble in hot Ammonium acetate solution. | SO4 2- Ions confirmed |
Thus, Acidic radicals are Sulphate ions (SO4 2- Ions)
Test for Basic Radicals
| Solubility in water: Take 2.0 gm of salt and add water | Clear solution formed This is referred as original Solution (O.S.) | Water soluble salt. |
| O.S. + Dilute NaOH: Take 5 ml of O.S. and add Dilute NaOH solution if required heat gently | Ammoniacal odor | Group Zero Present NH4 1+ ions present |
Confirmative Test for Ammonium ions
| O.S. + Conc. NaOH | Strong Ammoniacal Odor | NH4 1+ (Ammonium) ions Confirmed |
| O.S. + Nessler’s Reagent | Red Brown precipitates are formed | NH4 1+ (Ammonium) ions Confirmed |
Thus, Basic radicals are NH4 1+ (Ammonium) ions
The given inorganic Salt is (NH4)2 SO4 (Ammonium Sulphate)
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| Ammonium Chloride | Preparation of 0.5 M Oxalic Acid | NCERT Class 11 Part 1 | Part 2 |
| Ammonium Nitrate | Preparation of 0.1 M Sodium bicarbonate | NCERT Class 12 Part 1 | Part 2 |
| Lead Acetate | Preparation of M/40 Mohr’s salt solution | CBSE Class 11 Syllabus |
| Aluminum Sulphate | CBSE Class 12 syllabus |
