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Conductance of Electrolytic Solution

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Find out the concentration of following solution in terms of Molarity and Normality (a)11.2g% KOH (b)21.2g% Na2CO3

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Q. Which of the following concentration terms temperature independent ?
(I) Molarity (II) Molality
(III) Normality (IV) Mole fraction

25

0.1 M

A g N O_{3}

50.0

0.08 M

N a_{2} C O_{3}

solution, then the molar concentration of

N a_{2} C O_{3}

in the solution is

x \times 10^{- 2} M

x

Q. In a solution, the concentration of

C a C l_{2}

5 M

M g C l_{2}

5 M

. The specific gravity of solution is

1.05

. Calculate the concentration of

C l^{-}

in the solution in terms of its molarity.

Q. 25.3 g of sodium carbonate

N a_{2} C O_{3}

is dissolved in enough water to make 250 mL of solution .If sodium carbonate dissociates completely molar concentration of sodium ions

N a^{+}

and carbonate ions are respectively (molar mass of

N a_{2} C O_{3} = 106 g m o l^{- 1}

Q. The concentration of a solution can be expressed in molarity, normality, formality and molality. Among them, which mode of expression is the most accurate for the all conditions?

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