Question

V1 cc solution having molarity M1 is diluted to have molarity M2. Derive expression (in terms of M1,M2 andV1)for the volume of water required to be added,

Answer 1

Answer:

From the principle of dilution,

moles of solute before dilution = moles of solute after dilution

V

1

M

1

=(V

1

+V

2

)M

2

(V

f

=V

1

+V

2

)

Volume of water added (V

2

)=

M

2

V

1

(M

1 −M 2 )

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