Molecular Formula of Sulfuric Acid:
The molecular formula of sulfuric acid is H2SO4.
Molar Mass of Sulfuric Acid:
The molar mass of sulfuric acid can be calculated by adding the atomic masses of two hydrogen atoms (H), one sulfur atom (S), and four oxygen atoms (O).
- Molar mass of H = 1.008 g/mol
- Molar mass of S = 32.066 g/mol
- Molar mass of O = 16.000 g/mol
Molar mass of H2SO4 = (2 x 1.008 g/mol) + (1 x 32.066 g/mol) + (4 x 16.000 g/mol)
= 2.016 g/mol + 32.066 g/mol + 64.000 g/mol
= 98.082 g/mol
Calculating the Number of Molecules:
Now that we know the molecular formula and the molar mass of sulfuric acid, we can calculate the number of molecules present in 1 molar mass (98.082 g) of sulfuric acid.
Avogadro's number (Nₐ) tells us that there are 6.022 x 10^23 molecules in one mole of any substance.
Number of molecules = (Number of moles) x (Avogadro's number)
= (1 mole) x (6.022 x 10^23 molecules/mole)
= 6.022 x 10^23 molecules
Therefore, there are 6.022 x 10^23 molecules present in 1 molar mass (98.082 g) of sulfuric acid.
