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Introduction to stoichiometry|Unit conve...

Introduction to stoichiometry|Unit conversion| Law of chemical combination|Law of conservtion of mass|Law of constant composition

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Laws of Chemical Combination

Name any two laws of chemical combination.

Knowledge Check

  • Whichof the statement are ture about the law of chemical combination?

    A
    Potassium combines with two isotopes of chlorine `.^(35)Cl` and `.^(37)Cl`) to form two samples of `KCl`. Their formation follows the law of definite composition.
    B
    Different proportion of oxygen in the varius oxidies of sulphur prove the law of multiple proportiens.
    C
    `H_(2) O` and `H_(2)S` contains `11.11%` hydrogen and `5.88%` hydrogen, respectively, whereas `SO_(2)` contains 50% sulphur. The above data prove the law of reciprocal proportions.
    D
    In the decomposition of `NH_(3), 2NH_(3) overset(Delta)rarr N_(2) + 3H_(2)`, the ratio of volumes of `NH_(3),N_(2)` and `H_(2)` is `2 : 1 : 3` The above data proves the Gay Lussac law.

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    Revision Questions|Laws Of Chemical Combination|Law Of Conservation Of Mass|Limitation|Exercise Questions|Law Of Definite Composition / Definite Proportion / Constant Composition (By Joseph Proust) |Exercise Questions|Law Of Multiple Proportion (Given by Dalton)|Exercise Questions|Law Of Reciprocal Proportion (By Richter In 1792)|Summary

    Revision Questions|Laws Of Chemical Combination|Law Of Conservation Of Mass|Limitation|Exercise Questions|Law Of Definite Composition / Definite Proportion / Constant Composition (By Joseph Proust) |Exercise Questions|Law Of Multiple Proportion (Given by Dalton)|Exercise Questions|Law Of Reciprocal Proportion (By Richter In 1792)|Summary

    Point out the limitations of the law of constant composition if any.

    What are chemical reactions according to the Law of conservation of mass?

    Why do mixtures not obey the law of constant composition?

    State the following laws of chemical combination and give one example in each case (i) Law of constant composition. (ii) Law of multiple proportions.

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