First slide

Concentration methods

Question

0.1 moles of Barium hydroxide is dissolved in a 400 ml solution. Normality of the solution is-----N

Moderate

A

0.1
B

0.5
C

0.25
D

0.4

Solution

$N = Number of gram equivalents \times \frac{1}{V (l)}; N = Number of gram equivalents \times \frac{1000}{V (ml)}; Number of gram equivalents = \frac{w_{solute}}{GEW of solute}; Number of gram equivalents = Number of moles \times Valency; Ba {(OH)}_{2} is a diacidic base; N = 0.1 \times 2 \times \frac{1000}{400} = 0.5 N;$

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