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Answer:
The equivalent weight is the mass of a substance that combines with or is chemically equivalent to eight grams of oxygen or one gram of hydrogen. The equivalent weight of a strong acid is the molecular weight divided by the number of replaceable hydrogen ions.
The molecular formula of sulphuric acid- H2SO4
Its molecular mass,
(1 × 3) + 3 2 + (1 6 × 4)
Molecular mass of H2SO4= 2 + 32 + 64
The molecular mass of H2SO4 = 98 u
The equivalent weight of acid is represented as
Equivalent weight = Molecular mass/ Number of replaceable hydrogen present—— (1)
sulphuric acid contains 2 replaceable hydrogens.
Substitute values in equation (1).
Equivalent weight = 98/2
= 49u
