Molar Mass Of Mgcl2

Vonbon Hill

less than a minute read

·

28-11-2024

1

0

Share

Magnesium chloride (MgCl₂) is an ionic compound with a wide range of applications, from de-icing roads to producing magnesium metal. Understanding its molar mass is crucial for various chemical calculations. Let's break down how to determine this important value.

Calculating the Molar Mass

The molar mass of a compound represents the mass of one mole of that substance, expressed in grams per mole (g/mol). To calculate the molar mass of MgCl₂, we need to consider the atomic masses of its constituent elements: magnesium (Mg) and chlorine (Cl).

Atomic Masses

• Magnesium (Mg): Approximately 24.31 g/mol
• Chlorine (Cl): Approximately 35.45 g/mol

Calculation

The formula MgCl₂ indicates that one molecule of magnesium chloride contains one magnesium atom and two chlorine atoms. Therefore, the molar mass is calculated as follows:

Molar Mass (MgCl₂) = (1 × Atomic Mass of Mg) + (2 × Atomic Mass of Cl)

Molar Mass (MgCl₂) = (1 × 24.31 g/mol) + (2 × 35.45 g/mol)

Molar Mass (MgCl₂) = 24.31 g/mol + 70.90 g/mol

Molar Mass (MgCl₂) = 95.21 g/mol

Therefore, the molar mass of MgCl₂ is approximately 95.21 g/mol. This value is essential for stoichiometric calculations, determining the number of moles in a given mass of MgCl₂, and numerous other applications in chemistry. Slight variations might occur depending on the source of atomic mass data used. However, the value of 95.21 g/mol is widely accepted and accurate enough for most purposes.