What is M1V1=M2V2 different from M1=M2V2/(V1+V2)and N1V1=N2V2

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Solution

Dear student,

The normality equatio (N1V1=N2V2) is the direct result of law of equivalent which can be derived as follows.

We know, normality=no. Of gram equivalent÷ litre of solution

No. Of g equivalent = litre of solution× normality at the equivalent point of titration

No. Of g eq. Of acid=No. Of g eq. Of base

Or, litre of acid solution×normality of acid=litre of base solution×normality of base

Or, V1N1=V2N2 This is normality equation.

To prepare a fixed amount of dilute solution, we have a formula

M1V1 = M2V2

Where,

V1 denotes the Volume of stock solution needed to make the new solution

M1 = Concentration of stock solution

V2 is the final volume of the solution.

M2= concentration of new solution

Regards

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