Resorcinol [C6H4(OH)2] Molecular Weight Calculation

The molecular weight of Resorcinol [C6H4(OH)2] is 110.111.

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: Resorcinol [C6H4(OH)2] Molecular Weight Calculation

Step 1: Find out the chemical formula and determine constituent atoms and their number in a Resorcinol molecule.
From the chemical formula, you will know different atoms and their number in a Resorcinol molecule. Chemical formula of Resorcinol is C6H6O2. From the chemical formula of Resorcinol, you can find that one molecule of Resorcinol has six Carbon (C) atoms, six Hydrogen (H) atoms and two Oxygen (O) atoms.

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 Resorcinol molecule by multiplying its atomic weight by its number.

Number of Carbon atoms in Resorcinol: 6
Atomic weight of Carbon: 12.0107
Total weight of Carbon atoms in Resorcinol: 12.0107 x 6 = 72.0642

Number of Hydrogen atoms in Resorcinol: 6
Atomic weight of Hydrogen: 1.008
Total weight of Hydrogen atoms in Resorcinol: 1.008 x 6 = 6.048

Number of Oxygen atoms in Resorcinol: 2
Atomic weight of Oxygen: 15.9994
Total weight of Oxygen atoms in Resorcinol: 15.9994 x 2 = 31.9988

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

Molecular weight of Resorcinol: 72.0642 (Carbon) + 6.048 (Hydrogen) + 31.9988 (Oxygen) = 110.111

So the molecular weight of Resorcinol is 110.111.

Resorcinol [C6H4(OH)2] Molecular Weight Calculation

Molecular weight of Resorcinol
Constituent atoms
Number of each atom
Atomic weightTotal weight
Carbon (C)612.010772.0642
Hydrogen (H)
6
1.0086.048
Oxygen (O)
2
15.999431.9988
Molecular weight of Resorcinol:
110.111

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

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