The molecular weight of Strontium Chloride (SrCl2) is 158.5254.
To calculate molecular weight of any compound, the first step is to know the constituent elements (atoms) and their number in that particular compound. Then calculate the total atomic weight of each element by multiplying its atomic weight by its number. The sum of total atomic weight of all constituent elements will be the molecular weight of the compound. Note that the value of atomic weight may differ from different sources.
CALCULATION PROCEDURE
Step 1: Find out the chemical formula and determine constituent atoms and their number in a Strontium Chloride molecule.
From the chemical formula, you will know different atoms and their number in a Strontium Chloride molecule. Chemical formula of Strontium Chloride is SrCl2. From the chemical formula of Strontium Chloride, it is easy to find out that there are one Strontium (Sr) atom and two Chlorine (Cl) atoms in a molecule of Strontium Chloride.
Step 2: Find out atomic weights of each atom (from periodic table).
Atomic weight of Strontium (Sr): 87.62 (Ref: Pubchem-38, Ciaaw-strontium)
Atomic weight of chlorine (Cl) : 35.4527 (Ref: Pubchem-Chlorine, jlab-ele017)
Step 3: Calculate the molecular weight of Strontium Chloride by adding the total weight of all atoms.
Number of Strontium atoms in Strontium Chloride: 1
Atomic weight of Strontium: 87.62
Total weight of Strontium atoms in Strontium Chloride: 87.62 x 1 = 87.62
Number of Chlorine atoms in Strontium Chloride: 2
Atomic weight of Chlorine: 35.4527
Total weight of Chlorine atoms in Strontium Chloride: 35.4527 x 2 = 70.9054
Step 4: Calculate the molecular weight of Strontium Chloride by adding up the total weight of all atoms.
Molecular weight of Strontium Chloride (SrCl2):
87.62 (Strontium) + 70.9054 (Chlorine)
So the molecular weight of Strontium Chloride is 110.9854.
| Molecular weight of Strontium Chloride (SrCl2) | |||
| Atoms (elements) in Strontium Chloride | Number of each atom in Strontium Chloride | Atomic weight | Total weight |
| Sr (Strontium) | 1 | 87.62 | 87.62 (87.62 x 1) |
| Cl (Chlorine) | 2 | 35.4527 | 70.9054 (35.4527 x 2) |
| Molecular weight of Strontium Chloride (SrCl2): | 158.5254 | ||
REFERENCES:
- Pubchem-38: https://pubchem.ncbi.nlm.nih.gov/element/38
- Ciaaw-strontium : https://www.ciaaw.org/strontium.htm
- Jlab-ele038: https://education.jlab.org/itselemental/ele038.html
- Pubchem-Chlorine: https://pubchem.ncbi.nlm.nih.gov/element/Chlorine
- jlab-ele017: https://education.jlab.org/itselemental/ele017.html
