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molecular weight of k2s2o8

The Molecular Weight of Potassium Persulfate (K2S2O8)

Potassium persulfate, with the chemical formula K2S2O8, is an inorganic compound that plays a significant role in various industrial and laboratory applications. Understanding its molecular weight is crucial for scientists and engineers working with this compound, especially in formulations and reactions where precise measurements are essential. In this article, we will explore the molecular weight of potassium persulfate, its structure, and its applications in different fields.

Molecular Weight Calculation

To calculate the molecular weight of K2S2O8, we need to sum the atomic weights of each of its constituent atoms. The formula contains

- 2 Potassium (K) atoms - 2 Sulfur (S) atoms - 8 Oxygen (O) atoms

Using the standard atomic weights from the periodic table, we find

- Potassium (K) has an approximate atomic weight of 39.10 g/mol. - Sulfur (S) has an atomic weight of about 32.07 g/mol. - Oxygen (O) is about 16.00 g/mol.

Now, we can perform the calculations

1. For Potassium \(2 \times 39.10 \, \text{g/mol} = 78.20 \, \text{g/mol}\)

2. For Sulfur \(2 \times 32.07 \, \text{g/mol} = 64.14 \, \text{g/mol}\)

3. For Oxygen \(8 \times 16.00 \, \text{g/mol} = 128.00 \, \text{g/mol}\)

molecular weight of k2s2o8

Adding these values together gives

\[ \text{Molecular Weight of K2S2O8} = 78.20 \, \text{g/mol} + 64.14 \, \text{g/mol} + 128.00 \, \text{g/mol} = 270.34 \, \text{g/mol} \]

Thus, the molecular weight of potassium persulfate is approximately 270.34 g/mol.

Properties of Potassium Persulfate

Potassium persulfate is a white, crystalline solid that is highly soluble in water. As a strong oxidizing agent, it is commonly used in various applications, including polymerization reactions, where it acts as a radical initiator. This property is crucial in the production of plastics and other synthetic materials.

In addition to its role in polymer chemistry, potassium persulfate is utilized in the field of analytical chemistry. It serves as a reagent for the determination of certain metals and as an oxidizing agent in environmental testing, particularly in the analysis of soil and water for pollutants.

Safety and Handling

While potassium persulfate has many beneficial applications, it is essential to handle it with care. As a strong oxidizer, it can pose hazards if it comes into contact with flammable materials or reducing agents. Proper safety equipment, such as gloves and goggles, should always be used when working with this compound. Moreover, it should be stored in a cool, dry place, away from incompatible substances.

Conclusion

In conclusion, potassium persulfate (K2S2O8) is a compound of significant importance in various chemical processes. Knowing its molecular weight, approximately 270.34 g/mol, allows professionals across fields to make accurate calculations and predictions in their work. Whether in the manufacturing of polymers or in analytical practices, understanding the properties and safe handling of potassium persulfate is essential for achieving optimal results. As chemical science continues to advance, compounds like K2S2O8 will undoubtedly remain valuable assets in both research and industrial applications.

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