Molar mass of nitric acid (HNO3)

The molar mass of nitric acid (HNO3) is 63.012 g/mol.

Step-by-step calculation

Element	Atoms	Atomic mass	Subtotal
Hydrogen	× 1	1.008	= 1.008
Nitrogen	× 1	14.007	= 14.007
Oxygen	× 3	15.999	= 47.997
Total			63.012 g/mol

Percent composition by element

Hydrogen 1.6%
Nitrogen 22.23%
Oxygen 76.17%

Nitric acid facts

Nitric acid is a colorless, highly corrosive liquid that often turns yellow over time as it decomposes and releases nitrogen dioxide.
It is used mainly to make ammonium nitrate fertilizer and also to make explosives such as TNT and nitroglycerin.
Nitric acid turns skin and other proteins yellow, a color change used in the xanthoproteic test for proteins.

Try another formula

H₂O NaCl CO₂ C₆H₁₂O₆ H₂SO₄ Ca(OH)₂ CuSO₄·5H₂O C₈H₁₀N₄O₂

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Related compounds

NH₄NO₃ Ammonium nitrate C₈H₁₀N₄O₂ Caffeine NH₄OH Ammonium hydroxide HNO₂ Nitrous acid CO(NH₂)₂ Urea C₈H₉NO₂ Acetaminophen

FAQ

What is the molar mass of HNO3?

The molar mass of nitric acid (HNO3) is 63.012 g/mol.

How do you calculate the molar mass of HNO3?

Multiply the atomic mass of each element by the number of its atoms in HNO3, then add the results: 1 × 1.008 (H) + 1 × 14.007 (N) + 3 × 15.999 (O) = 63.012 g/mol.

What percentage of HNO3 is Oxygen?

Oxygen makes up 76.17% of the mass of nitric acid (HNO3).