Molar Mass of C8H6O4 (Terephthalic Acid)

Molar Mass Calculator

What is the molar mass of C₈H₆O₄?

Answer

M(C₈H₆O₄) =

166.132 g/mol

Atomic weights: IUPAC standard values (CIAAW, 2024).

Contribution of each element
Element	Atoms, n	Atomic weight, A	n × A, g/mol Mass fraction, w	Mass fraction, w
Ccarbon	8	12.011	96.088 w ≈ 57.84%	≈ 57.84%
Hhydrogen	6	1.0080	6.0480 w ≈ 3.64%	≈ 3.64%
Ooxygen	4	15.999	63.996 w ≈ 38.52%	≈ 38.52%
Σ = 166.132 g/mol w = 100%				100%

Atomic weights: CIAAW, Abridged Standard Atomic Weights (2024)

Mass fractions of the elements

C 57.84%O 38.52%

H 3.64%

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Molar masses of substances nearby

Formula	M, g/mol
Ho (holmium)	164.93
C₉H₁₁NO₂ (phenylalanine)	165.192
KI (potassium iodide)	166.00
C₈H₆O₄ (terephthalic acid)	166.132
KBrO₃ (potassium bromate)	166.999
Er (erbium)	167.26
Tm (thulium)	168.93

FAQ

What is the molar mass of C8H6O4?

M(C₈H₆O₄) = 166.132 g/mol

How to calculate the molar mass of C₈H₆O₄?

Add up the atomic weights of all the atoms in the formula: 8 × 12.011 + 6 × 1.0080 + 4 × 15.999 = 166.132 g/mol.

How many grams are in 2 moles of C₈H₆O₄?

m = n × M = 2 mol × 166.132 g/mol = 332.264 g.

See Also