A 0.5 m solution could be prepared by dissolving 20 g NaOH in :

0.5 L water

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0.5 kg water

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1 L water

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1 kg water

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2 L water

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Solution

The correct option is D 1 kg water
Let mass of solvent be $x$
$.5$ $=$ $20 / (40 \times x K g s o l v e n t)$
So, Mass of solvent ( $x$ ) $=$ $1 K g$

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