Chemistry Assignment Help >> General Chemistry >> Laws of Equivalence, Normality Equation, Milliequivalents Assignment Help

Law of Equivalence

For a chemical reaction:

aA + bB -> cC + dD

Equivalent of A = Equivalent of B = Equivalent of C = Equivalent of D



where n, and M is n factor, molecular mass of ith species,

If the reaction is carried out in solution, then N_AV_A = N_BV_B = N_CV_C = N_DV_D or n_AM_AV_A = n_BM_BV_B = n_CM_CV_C = n_DM_DV_D

Normality Equation

NN₁ = NN₂

Gram equivalent of acid = Gram equivalent of base (if volume in L)

Milliequivalents

MiUiequivalents = Normality x volume (in ml)

For a given solution, number of equivalents per litre is same as the number of milliequivalents per ml, Moles, millimoles, equivalent, milli equivalent of solute does not change on dilution.

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