Molar Mass of K2CrO4 (Potassium Chromate)

Molar Mass Calculator

What is the molar mass of K₂CrO₄?

Answer

M(K₂CrO₄) =

194.188 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	2	39.098	78.196 w ≈ 40.27%	≈ 40.27%
Crchromium	1	51.996	51.996 w ≈ 26.78%	≈ 26.78%
Ooxygen	4	15.999	63.996 w ≈ 32.96%	≈ 32.96%
Σ = 194.188 g/mol w = 100%				100%

Each fraction is rounded on its own, so the printed ones add up to 100.01%; unrounded, they make exactly 100%.

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

Mass fractions of the elements

K 40.27%

O 32.96%Cr 26.78%

Related Calculations

See Also

Liters to Kilograms - How many kilograms are in a liter of water, honey, gasoline, sand and other substances — by density
Grams to Kg - Convert Grams to Kilograms
Percentage Calculator: Fraction to Percent - What percentage one number is of another? Convert fraction into a percentage
Scientific Calculator with Memory & History - Free Engineering Calculator Online with Memory Function, Operation History, Logarithms & Trigonometry. Similar to ti-83, ti-84, ti-89

Recalculate with different values ↑

Molar masses of substances nearby

Formula	M, g/mol
CuI (cuprous iodide)	190.45
H₃C₆H₅O₇ (citric acid)	192.123
Ir (iridium)	192.22
K₂CrO₄ (potassium chromate)	194.188
C₈H₁₀N₄O₂ (caffeine)	194.194
Pt (platinum)	195.08
C₆H₁₂O₇ (D-gluconic acid)	196.155

FAQ

What is the molar mass of K2CrO4?

M(K₂CrO₄) = 194.188 g/mol

How to calculate the molar mass of K₂CrO₄?

Add up the atomic weights of all the atoms in the formula: 2 × 39.098 + 51.996 + 4 × 15.999 = 194.188 g/mol.

How many grams are in 2 moles of K₂CrO₄?

m = n × M = 2 mol × 194.188 g/mol = 388.376 g.

See Also