Can you please explain the concept of equivalent weights of different substances?
Can you please explain the concept of equivalent weights of different substances?
Equivalent Weight Equivalent weight of a substance (element or compound) is defined as “The number of parts by weight of it, that will combine with or displace directly or indirectly 1.008 parts by weight of hydrogen, 8 parts by weight of oxygen, 35.5 parts by weight chlorine or the equivalent parts by weight of another element”.
Equivalent weight of any substance depends on the reaction in which it takes part.
Equivalent weight is a relative quantity so it is unit less. When equivalent weight of a substance is expressed in grams, it is called Gram Equivalent Weight (GWE).
Calculation of Equivalent Weight Equivalent weight = Molar mass / Valence factor
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Valence factor for base = acidity of base
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Valence factor for acid = basicity of acid
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Valence factor for element = valency
Equivalent weight of a substance (element or compound) is defined as “The number of parts by weight of it, that will combine with or displace directly or indirectly 1.008 parts by weight of hydrogen, 8 parts by weight of oxygen, 35.5 parts by weight chlorine or the equivalent parts by weight of another element”.
Equivalent weight of any substance depends on the reaction in which it takes part.
Equivalent weight is a relative quantity so it is unit less. When equivalent weight of a substance is expressed in grams, it is called Gram Equivalent Weight (GWE).
Calculation of Equivalent Weight
Equivalent weight = Molar mass / Valence factor
-
Valence factor for base = acidity of base
-
Valence factor for acid = basicity of acid
-
Valence factor for element = valency
