begin mathsize 48px style V subscript i n i end subscript S subscript i n i end subscript equals V subscript f i n end subscript S subscript f i n end subscript end style

Vini = Volume of the solution before dilution , Vfin = Volume the solution after dilution , Sini= Initial strength of the solution after dilution, Sfin= Final strength of the solution after dilution

begin mathsize 36px style M equals fraction numerator W subscript s o l u t e end subscript over denominator V. M subscript w end fraction end style

M=Molarity of the Solution ; Wsolute = Weight of the Solute ; V = Volume of the solution; Mw = Molecular Weight of the solute;

begin mathsize 36px style N equals fraction numerator W subscript s o l u t e end subscript. n over denominator V. M subscript w end fraction end style

N=Normality of the Solution ; Wsolute = Weight of the Solute ; V = Volume of the solution;

Mw = Molecular Weight of the Solute; n = Equivalence Factor (basicity of an acid or acidity of a base/Number of electron transfer per mole reaction)

begin mathsize 48px style V subscript 1 S subscript 1 equals V subscript 2 S subscript 2 end style

V1 = Volume of the 1st solution , V2 = Volume of the 2nd solution , S1= Strength of the 1st solution, S2= Strength of the 2nd solution