Molar Mass of KC6H5CO2 (Potassium Benzoate)

Molar Mass Calculator

What is the molar mass of KC₆H₅CO₂?

Answer

M(KC₆H₅CO₂) =

160.213 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
Kpotassium	1	39.098	39.098 w ≈ 24.40%	≈ 24.40%
Ccarbon	7	12.011	84.077 w ≈ 52.48%	≈ 52.48%
Hhydrogen	5	1.0080	5.0400 w ≈ 3.15%	≈ 3.15%
Ooxygen	2	15.999	31.998 w ≈ 19.97%	≈ 19.97%
Σ = 160.213 g/mol w = 100%				100%

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

Mass fractions of the elements

C 52.48%

K 24.40%O 19.97%H 3.15%

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Molar masses of substances nearby

Formula	M, g/mol
CuSO₄ (cupric sulfate)	159.60
Fe₂O₃ (iron(III) oxide)	159.687
Br₂ (bromine)	159.808
KC₆H₅CO₂ (potassium benzoate)	160.213
ZnSO₄ (zinc sulfate)	161.44
Na₂CrO₄ (sodium chromate)	161.972
Ca(HCO₃)₂ (calcium bicarbonate)	162.110

FAQ

What is the molar mass of KC6H5CO2?

M(KC₆H₅CO₂) = 160.213 g/mol

How to calculate the molar mass of KC₆H₅CO₂?

Add up the atomic weights of all the atoms in the formula: 39.098 + 7 × 12.011 + 5 × 1.0080 + 2 × 15.999 = 160.213 g/mol.

How many grams are in 2 moles of KC₆H₅CO₂?

m = n × M = 2 mol × 160.213 g/mol = 320.426 g.

See Also