Properties of Potassium Bromide

Oct 13, 2025 by miodeya.com 76 views

Introduction to Potassium Bromide

Potassium bromide (KBr) is a chemical compound that has been widely used in various applications, including photography, pharmaceuticals, and as a fire retardant. It is a white crystalline solid that is highly soluble in water. In this article, we will explore the properties of potassium bromide and determine which row in a given table describes its characteristics.

Properties of Potassium Bromide

Potassium bromide is a highly soluble compound that can dissolve in water to form a solution. This property makes it useful in various applications, such as photography, where it is used as a developer to produce images on photographic paper. In addition to its solubility in water, potassium bromide also has a relatively low melting point, which makes it easy to melt and form into various shapes.

Melting Point of Potassium Bromide

The melting point of potassium bromide is an important property that determines its behavior in various applications. The melting point of a compound is the temperature at which it changes state from a solid to a liquid. In the case of potassium bromide, its melting point is relatively low, which makes it easy to melt and form into various shapes.

Electrical Properties of Potassium Bromide

In addition to its physical properties, potassium bromide also has electrical properties that make it useful in various applications. It is a good electrical insulator, which means that it can resist the flow of electric current. This property makes it useful in applications where electrical insulation is required, such as in the manufacture of electrical components.

Determining the Properties of Potassium Bromide

To determine which row in the given table describes the properties of potassium bromide, we need to examine each row carefully. The table contains four rows, each with three columns: Soluble in water, Melting point, and Electrical properties.

Row 1: Soluble in Water, Melting Point 730°C, Electrical Insulator

This row describes a compound that is soluble in water, has a melting point of 730°C, and is an electrical insulator. While potassium bromide is soluble in water, its melting point is actually lower than 730°C. Therefore, this row does not accurately describe the properties of potassium bromide.

Row 2: Soluble in Water, Melting Point 730°C, Electrical Conductor

This row describes a compound that is soluble in water, has a melting point of 730°C, and is an electrical conductor. While potassium bromide is soluble in water, its melting point is actually lower than 730°C. Additionally, potassium bromide is not an electrical conductor, but rather an electrical insulator. Therefore, this row does not accurately describe the properties of potassium bromide.

Row 3: Insoluble in Water, Melting Point 730°C, Electrical Insulator

This row describes a compound that is insoluble in water, has a melting point of 730°C, and is an electrical insulator. While potassium bromide is actually soluble in water, its melting point is actually lower than 730°C. Therefore, this row does not accurately describe the properties of potassium bromide.

Row 4: Soluble in Water, Melting Point 734°C, Electrical Insulator

This row describes a compound that is soluble in water, has a melting point of 734°C, and is an electrical insulator. While potassium bromide is actually soluble in water, its melting point is actually lower than 734°C. However, this row accurately describes the electrical properties of potassium bromide, which is an electrical insulator.

Conclusion

In conclusion, the row that describes the properties of potassium bromide is Row 4: Soluble in Water, Melting Point 734°C, Electrical Insulator. This row accurately describes the solubility of potassium bromide in water, its melting point, and its electrical properties as an insulator.

References

CRC Handbook of Chemistry and Physics, 97th Edition, 2016-2017.
Kirk-Othmer Encyclopedia of Chemical Technology, 5th Edition, 2004.
Weast, R. C. (ed.), CRC Handbook of Chemistry and Physics, 64th ed., CRC Press, 1983.

Table of Properties

	Soluble in Water	Melting Point	Electrical Properties
Potassium Bromide (KBr)	Yes	734°C	Electrical Insulator

Chemical Formula

The chemical formula for potassium bromide is KBr.

Molecular Weight

The molecular weight of potassium bromide is 119.00 g/mol.

Appearance

Potassium bromide is a white crystalline solid.

Solubility

Potassium bromide is highly soluble in water.

Melting Point

The melting point of potassium bromide is 734°C.

Electrical Properties

Potassium bromide is an electrical insulator.

Applications

Potassium bromide is used in various applications, including photography, pharmaceuticals, and as a fire retardant.

Safety Precautions

When handling potassium bromide, it is essential to wear protective gloves and eyewear to avoid skin and eye irritation.

Introduction

Potassium bromide (KBr) is a chemical compound that has been widely used in various applications, including photography, pharmaceuticals, and as a fire retardant. In this article, we will answer some of the most frequently asked questions about potassium bromide.

Q: What is the chemical formula for potassium bromide?

A: The chemical formula for potassium bromide is KBr.

Q: What is the molecular weight of potassium bromide?

A: The molecular weight of potassium bromide is 119.00 g/mol.

Q: What is the appearance of potassium bromide?

A: Potassium bromide is a white crystalline solid.

Q: Is potassium bromide soluble in water?

A: Yes, potassium bromide is highly soluble in water.

Q: What is the melting point of potassium bromide?

A: The melting point of potassium bromide is 734°C.

Q: What are the electrical properties of potassium bromide?

A: Potassium bromide is an electrical insulator.

Q: What are the applications of potassium bromide?

A: Potassium bromide is used in various applications, including photography, pharmaceuticals, and as a fire retardant.

Q: Is potassium bromide safe to handle?

A: When handling potassium bromide, it is essential to wear protective gloves and eyewear to avoid skin and eye irritation.

Q: Can potassium bromide be used as a fire retardant?

A: Yes, potassium bromide can be used as a fire retardant due to its high thermal stability and low melting point.

Q: Is potassium bromide toxic?

A: Potassium bromide is generally considered to be non-toxic, but it can cause skin and eye irritation in some individuals.

Q: Can potassium bromide be used in photography?

A: Yes, potassium bromide is used in photography as a developer to produce images on photographic paper.

Q: Is potassium bromide a good electrical insulator?

A: Yes, potassium bromide is a good electrical insulator due to its high dielectric strength and low electrical conductivity.

Q: Can potassium bromide be used in pharmaceuticals?

A: Yes, potassium bromide is used in some pharmaceutical applications, such as in the manufacture of certain medications.

Q: Is potassium bromide a stable compound?

A: Yes, potassium bromide is a stable compound that can be stored for long periods of time without decomposing.

Q: Can potassium bromide be used in other industries?

A: Yes, potassium bromide can be used in other industries, such as in the manufacture of certain plastics and resins.