Aluminum Potassium Sulfate Dodecahydrate [AlK(SO4)2.12H2O] Molecular Weight Calculation

The molecular weight of Aluminum potassium sulfate dodecahydrate [AlK(SO4)2.12H2O] is 474.3918384.

Aluminum potassium sulfate dodecahydrate [AlK(SO4)2.12H2O] Molecular Weight CalculationAluminum potassium sulfate dodecahydrate [AlK(SO4)2.12H2O] is an inorganic compound of four elements: Aluminum, Potassium, Sulfur, and Oxygen. The molecular weight of Aluminum potassium sulfate dodecahydrate (AlK(SO4)2.12H2O) is 474.3918384 which can be calculated by adding up the total weight (atomic weight multiplied by their number) of Potassium, Sulfur and Oxygen and 12 molecules of water.

CALCULATION PROCEDURE: Aluminum potassium sulfate dodecahydrate [AlK(SO4)2.12H2O] Molecular Weight Calculation

Step 1: Find out the chemical formula and determine constituent atoms and their number in a Aluminum potassium sulfate dodecahydrate molecule.
From the chemical formula, you will know different atoms and their number in a Aluminum potassium sulfate dodecahydrate molecule. Chemical formula of Aluminum potassium sulfate dodecahydrate is AlK(SO4)2.12H2O. From the chemical formula of Aluminum potassium sulfate dodecahydrate, you can find that one molecule of Aluminum potassium sulfate dodecahydrate has one Aluminum (Al) atom, one Potassium (K) atom, two Sulfur (S) atoms and eight Oxygen (O) atoms and twelve molecules of water.

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

Atomic weight of Aluminum (Al): 26.9815384 (Ref: ciaaw-aluminium)
Atomic weight of
Potassium (K): 39.0983 (Ref: Ciaaw-potassium)
Atomic weight of
Sulfur (S): 32.066 (Ref: Jlab-ele016)
Atomic weight of Oxygen (O) : 15.9994 (Ref: Jlab-ele008)
Molecular weight of water (H2O): 18.0154 

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

Number of Aluminum atoms in Aluminum potassium sulfate dodecahydrate: 1
Atomic weight of Aluminum: 26.9815384
Total weight of Aluminum atoms in Aluminum potassium sulfate dodecahydrate: 26.9815384 x 1 = 26.9815384

Number of Potassium atoms in Aluminum potassium sulfate dodecahydrate: 1
Atomic weight of Potassium: 39.0983
Total weight of Potassium atoms in Aluminum potassium sulfate dodecahydrate: 39.0983 x 1 = 39.0983

Number of Sulfur (S) atoms in Aluminum potassium sulfate dodecahydrate: 2
Atomic weight of Sulfur: 32.066
Total weight of Manganese atoms in Aluminum potassium sulfate dodecahydrate: 32.066 x 2 = 64.132

Number of Oxygen (O) atoms in Aluminum potassium sulfate dodecahydrate: 8
Atomic weight of Oxygen: 15.9994
Total weight of Oxygen atoms in Aluminum potassium sulfate dodecahydrate: 15.9994 x 8 = 127.9952

Number of water (H2O) molecules in Potassium antimonyl tartrate trihydrate: 12
Molecular weight of water: 18.0154
Total weight of water in Potassium antimonyl tartrate trihydrate: 18.0154 x 12 = 216.1848

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

Molecular weight of Aluminum potassium sulfate dodecahydrate : 26.9815384 (Aluminum) + 39.0983 (Potassium) + 64.132 (Sulfur) + 127.9952 (Oxygen) + 216.1848 (water)

So the molecular weight of Aluminum potassium sulfate dodecahydrate is 474.3918384.

Aluminum potassium sulfate dodecahydrate [AlK(SO4)2.12H2O] Molecular Weight Calculation

Molecular weight of Aluminum potassium sulfate dodecahydrate (AlK(SO4)2.12H2O)
Constituent atomsNumber of each atom
Atomic weight
Total weight
Aluminum (Al)
1
26.981538426.9815384
Potassium (K)139.098339.0983
Sulfur (S)2
32.06664.132
Oxygen (O)8
15.9994127.9952
Water (H2O)
12
18.0154216.1848
Molecular weight of Aluminum potassium sulfate dodecahydrate (AlK(SO4)2.12H2O):
474.3918384

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