equivalent concept

Problems Based on Concept of gram atom| Concept of gram mole and Concept of gram equivalent |Concentration terms (Mole Fraction, Mass Fraction, Molarity, Molality and Normaility)

Problems Based on Concept of gram atom| Concept of gram mole and Concept of gram equivalent |Concentration terms (Mole Fraction, Mass Fraction, Molarity, Molality and Normaility)

Concepts

Concept OF equivalent weight || old concept and new concept,introduction OF 'n' factor || calculation OF 'n' factor [A/B/C/N/V] || calculation OF 'n' factor OF Base/ Arrhenius Base

Vapour density| Percentage composition| Emperical and molecular formula|Concept of gram equivalent and equivalent weight

Earlier the concept of equivalent weight was very common and the concentrations of the solutions were expressed in terms of normolities. The convenience was that the substances reacted in the ratio of their gram equivalents. So there was no need for writing the balanced equations to determine the amounts of the substances reacted. However, determination of equivalent weights posed difficulty in certain cases. Moreover, the equivalent weight of the same substance is not same in different reactions. For example, KMnO_(4) has different equivalent weight in the basic medium than in teh acidic medium. Hence, now-a-days, mole concept is more common and the concentrations of the solutions are generally expressed in terms of molarities, though some other methods like molality, molarity, mole fractions etc. are also used The chloride of an element is found to contain 52.8% chlorine. The equivalent mass of the element is

Earlier the concept of equivalent weight was very common and the concentrations of the solutions were expressed in terms of normolities. The convenience was that the substances reacted in the ratio of their gram equivalents. So there was no need for writing the balanced equations to determine the amounts of the substances reacted. However, determination of equivalent weights posed difficulty in certain cases. Moreover, the equivalent weight of the same substance is not same in different reactions. For example, KMnO_(4) has different equivalent weight in the basic medium than in teh acidic medium. Hence, now-a-days, mole concept is more common and the concentrations of the solutions are generally expressed in terms of molarities, though some other methods like molality, molarity, mole fractions etc. are also used The equivalent mass of Cu