The concept of molar mass is a fundamental idea in chemistry, and understanding it is crucial for various calculations and applications. In this article, we will delve into the molar mass of NaBr, a compound commonly used in various industries. By the end of this article, you will have a comprehensive understanding of the molar mass of NaBr and its significance.
What is Molar Mass?
Before we dive into the molar mass of NaBr, it's essential to understand what molar mass is. Molar mass, also known as molecular weight, is the mass of one mole of a substance. It is calculated by summing the atomic masses of the individual atoms in a molecule. Molar mass is an important concept in chemistry, as it allows us to calculate the number of moles of a substance and its mass.
What is NaBr?
NaBr, also known as sodium bromide, is a compound composed of sodium (Na) and bromine (Br) atoms. It is a white crystalline solid with a high melting point and is commonly used in various industries, such as:
- Pharmaceuticals: NaBr is used as an anticonvulsant and a sedative.
- Photography: NaBr is used in the production of photographic papers and films.
- Food industry: NaBr is used as a food additive and a preservative.
Molar Mass of NaBr
The molar mass of NaBr is calculated by summing the atomic masses of sodium and bromine. The atomic mass of sodium is 22.99 g/mol, and the atomic mass of bromine is 79.90 g/mol.
Molar mass of NaBr = Atomic mass of Na + Atomic mass of Br = 22.99 g/mol + 79.90 g/mol = 102.89 g/mol
Therefore, the molar mass of NaBr is 102.89 g/mol.
Importance of Molar Mass of NaBr
The molar mass of NaBr is crucial in various applications, such as:
- Calculating the number of moles: The molar mass of NaBr allows us to calculate the number of moles of the compound, which is essential in various chemical reactions and calculations.
- Determining the mass of NaBr: The molar mass of NaBr allows us to determine the mass of the compound, which is necessary in various industrial applications.
- Understanding the properties of NaBr: The molar mass of NaBr is related to its physical and chemical properties, such as its melting point and solubility.
How to Calculate the Molar Mass of NaBr
Calculating the molar mass of NaBr is a straightforward process that involves summing the atomic masses of sodium and bromine. Here's a step-by-step guide:
- Determine the atomic masses of sodium and bromine from the periodic table.
- Sum the atomic masses of sodium and bromine.
- Round the result to the nearest two decimal places.
Example Problem
Calculate the mass of 2.5 moles of NaBr.
Solution:
- Determine the molar mass of NaBr: 102.89 g/mol
- Calculate the mass of 2.5 moles of NaBr: Mass = Number of moles x Molar mass = 2.5 mol x 102.89 g/mol = 257.225 g
Gallery of Sodium Bromide
Frequently Asked Questions
What is the molar mass of NaBr?
+The molar mass of NaBr is 102.89 g/mol.
What is the atomic mass of sodium?
+The atomic mass of sodium is 22.99 g/mol.
What is the atomic mass of bromine?
+The atomic mass of bromine is 79.90 g/mol.
In conclusion, the molar mass of NaBr is a fundamental concept in chemistry that is essential in various applications. By understanding the molar mass of NaBr, we can calculate the number of moles and the mass of the compound, which is crucial in various industrial applications.