Molar Mass of KNO2 (Potassium Nitrite)

Molar Mass Calculator

What is the molar mass of KNO₂?

Answer

M(KNO₂) =

85.103 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 ≈ 45.94%	≈ 45.94%
Nnitrogen	1	14.007	14.007 w ≈ 16.46%	≈ 16.46%
Ooxygen	2	15.999	31.998 w ≈ 37.60%	≈ 37.60%
Σ = 85.103 g/mol w = 100%				100%

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

Mass fractions of the elements

K 45.94%O 37.60%

N 16.46%

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Molar masses of substances nearby

Formula	M, g/mol
HClO₃ (chloric acid)	84.46
CH₂Cl₂ (dichloromethane)	84.93
NaNO₃ (sodium nitrate)	84.994
KNO₂ (potassium nitrite)	85.103
Rb (rubidium)	85.468
C₄H₆O₂ (methacrylic acid)	86.090
C₆H₁₄ (hexane)	86.178

FAQ

What is the molar mass of KNO2?

M(KNO₂) = 85.103 g/mol

How to calculate the molar mass of KNO₂?

Add up the atomic weights of all the atoms in the formula: 39.098 + 14.007 + 2 × 15.999 = 85.103 g/mol.

How many grams are in 2 moles of KNO₂?

m = n × M = 2 mol × 85.103 g/mol = 170.206 g.

See Also