Question

1. The chemical formula of sulphuric acid is H2 So4.
How many hydrogen atoms are present in one
molecule of sulphuric acid?​

Answer 1

Given that,

⇒ Chemical formula of Sulphuric acid is H₂SO₄

We need to find the number of Hydrogen atoms in 1 molecule of sulphuric acid.

We know,

1 mole of H₂SO₄ has 2 × 6.023 × 10²³ Hydrogen atoms.

Also,

⇒ 1 mole = 6.023 × 10²³ molecules

So,

⇒ 1 molecule = 1/6.023 × 10²³ mole

∴ Number of H atoms = 1.6023 × 10²³ × (1/6.023 × 10²³)× 2

⇒ Number of atoms of H = 2

Hence, 1 molecule of Sulphuric acid would have 2 Hydrogen atoms.

Some Information :-

☛ Number of Moles = Mass given / Molar mass

Same applies for molecules also,

Number of Moles = Mass given / Molecular mass

☛ 1 mole of a molecule/element has 6.023 × 10²³ molecules / atoms. Which is also known as Avogadro Number.