Equivalent Concept Revision Notes - IIT JEE/NEET Preparation | Nucleon

Equivalent Concept

  • Concept of equivalents
  • Equivalent mass of element
    Number of parts by mass of an element which reacts or displaces from a compound 1.008 parts by mass
    of hydrogen, 8 parts by mass of oxygen and 35.5 parts by mass of chlorine, is known as the equivalent
    weight of that element.

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  • Equivalent weight (E)
  • 1 Equivalent mass is a pure number which, when expressed in gram, is called gram equivalent mass.
    2 The equivalent mass of substance may have different values under different conditions.

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  • Valency factor calculation
  • 1 For Elements :
    Valency factor = valency of the element

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  • Normality
  • Normality of a solution is defined as the number of equivalents of solute present in one litre (1000 mL) solution.
    Let V mL of a solution is prepared by dissolving W g of solute of equivalent weight E in water.

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  • Law of Equivalence
  • The law states that one equivalent of an element combine with one equivalent of the
    other. In a chemical reaction, equivalents and milli equivalents of reactants react in equal
    amount to give same number of equivalents or milli equivalents of products separately.

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  • Titrations
  • Titration is a procedure for determining the concentration of a solution by allowing a carefully measured volume
    to react with a standard solution of another substance, whose concentration is known.

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  • Permanganate Titrations
  • 1 KMnO4 is generally used as oxidising agent in acidic medium, generally provided by dilute H2SO4 .

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  • Iodometric/Iodimetric Titrations
  • Compound containing iodine are widely used in titrations

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  • Calculation of Available Chlorine from a sample of Bleaching Powder
  • The weight of available Cl2 released from the given sample of bleaching powder on reaction with dilute
    acids or CO2 is called available chlorine.

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EQUIVALENT CONCEPT 01 | NV SIR( B.Tech. IIT Delhi) | IIT JEE MAIN + ADVANCED | AIPMT | CHEMISTRY

EQUIVALENT CONCEPT 03 | NV SIR( B.Tech. IIT Delhi) | IIT JEE MAIN + ADVANCED | AIPMT | CHEMISTRY |

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