# Aluminum Sulfate [Al2(SO4)3] Molecular Weight Calculation

The molecular weight of Aluminum sulfate [Al2(SO4)3] is 342.1538768.

Aluminum sulfate [Al2(SO4)3] is an inorganic compound of three elements: Aluminum, Sulfur, and Oxygen. The molecular weight of Aluminum sulfate [Al2(SO4)3] is 342.1538768 which can be calculated by adding up the total weight (atomic weight multiplied by their number) of all its elements.

# CALCULATION PROCEDURE: Aluminum sulfate [Al2(SO4)3] Molecular Weight Calculation

Step 1: Find out the chemical formula and determine constituent atoms and their number in an Aluminum sulfate molecule.
From the chemical formula, you will know different atoms and their number in an Aluminum sulfate molecule. The chemical formula of Aluminum sulfate is [Al2(SO4)3]. From the chemical formula, you can find that one molecule of Aluminum sulfate consists of two Aluminum (Al) atoms, three Sulfur (S) atoms, and twelve Oxygen (O) atoms.

Step 2: Find out the atomic weights of each atom (from the periodic table).

Atomic weight of Aluminum (Al): 26.9815384 (Ref: ciaaw-aluminium)
Atomic weight of
Sulfur (S): 32.066 (Ref: Jlab-ele016)
Atomic weight of Oxygen (O): 15.9994 (Ref: Jlab-ele008)

Step 3: Calculate the molecular weight of Aluminum sulfate by adding the total weight of all atoms.

Number of Aluminum atoms in Aluminum sulfate: 2
Atomic weight of Aluminum: 26.9815384
Total weight of Aluminum atoms in Aluminum sulfate: 26.9815384 x 2 = 53.9630768

Number of Sulfur (S) atoms in Aluminum sulfate: 3
Atomic weight of Sulfur: 32.066
Total weight of Manganese atoms in Aluminum sulfate: 32.066 x 3 = 96.198

Number of Oxygen (O) atoms in Aluminum sulfate: 12
Atomic weight of Oxygen: 15.9994
Total weight of Oxygen atoms in Aluminum sulfate: 15.9994 x 12 = 191.9928

Step 4: Calculate the molecular weight of Aluminum sulfate by adding up the total weight of all atoms.

Molecular weight of Aluminum sulfate: 53.9630768 (Aluminum) + 96.198 (Sulfur) + 191.9928 (Oxygen)

So the molecular weight of Aluminum sulfate is 342.1538768.

Aluminum sulfate [Al2(SO4)3] Molecular Weight Calculation