The molecular weight of Isopropyl alcohol ((CH₃)₂CHOH) is 60.0955.

To calculate molecular weight of any compound, the first step is to know the constituent atoms and their number in that particular compound. Then calculate the total weight of each atom by multiplying its atomic weight by its number. The sum of total weight of all constituent atoms will be the molecular weight of the compound. Note that the value of atomic weight may differ slightly from different sources.

CALCULATION PROCEDURE: Isopropyl alcohol ((CH₃)₂CHOH) Molecular Weight Calculation

Step 1: Find out the chemical formula and determine constituent atoms and their number in a Isopropyl alcohol molecule.
From the chemical formula, you will know different atoms and their number in a Isopropyl alcohol molecule. Chemical formula of Isopropyl alcohol is C₃H₈O. From the chemical formula of Isopropyl alcohol, you can find that one molecule of Isopropyl alcohol has three Carbon (C) atoms, eight Hydrogen (H) atoms and one Oxygen (O) atom.

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

Atomic weight of Carbon (C): 12.0107 (Ref: Jlab-ele006)
Atomic weight of Hydrogen (H) : 1.008 (Ref: Lanl-1)
Atomic weight of Oxygen (O) : 15.9994 (Ref: Jlab-ele008)

Step 3: Calculate the total weight of each atom present in a Isopropyl alcohol molecule by multiplying its atomic weight by its number.

Number of Carbon atoms in Isopropyl alcohol: 3
Atomic weight of Carbon: 12.0107
Total weight of Carbon atoms in Isopropyl alcohol: 12.0107 x 1 = 36.0321

Number of Hydrogen atoms in Isopropyl alcohol: 8
Atomic weight of Hydrogen: 1.008
Total weight of Hydrogen atoms in Isopropyl alcohol: 1.008 x 8 = 8.064

Number of Oxygen atoms in Isopropyl alcohol: 1
Atomic weight of Oxygen: 15.9994
Total weight of Oxygen atoms in Isopropyl alcohol: 15.9994 x 1 = 15.9994

Step 4: Calculate the molecular weight of Isopropyl alcohol by adding up the total weight of all atoms.

Molecular weight of Isopropyl alcohol: 36.0321 (Carbon) + 8.064 (Hydrogen) + 15.9994 (Oxygen) = 60.0955

So the molecular weight of Isopropyl alcohol is 60.0955.

Isopropyl alcohol ((CH₃)₂CHOH) Molecular Weight Calculation

REFERENCES:

• Lanl-1: https://periodic.lanl.gov/1.shtml 
• Pubchem-Hydrogen : https://pubchem.ncbi.nlm.nih.gov/element/Hydrogen 
• Jlab-ele006; https://education.jlab.org/itselemental/ele006.html
• Pubchem-6: https://pubchem.ncbi.nlm.nih.gov/element/6
• Jlab-ele008: https://education.jlab.org/itselemental/ele008.html
• Pubchem-8: https://pubchem.ncbi.nlm.nih.gov/element/8

See also:

• Apiose (C5H10O5) Molecular Weight Calculation