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Question

Vapour pressure of pure solvent is reduced to 25th of the initial pressure when a non-volatile non-electrolyte solute is added. The molality of the given solution will be (Molar mass of solvent = 120 g mol–1)

जब अ-वाष्पशील विद्युतअनअपघट्य विलेय मिलाया जाता है, तो शुद्ध विलायक का वाष्प दाब घटकर प्रारम्भिक दाब का 25th हो जाता है। दिए गए विलयन की मोललता होगी (विलायक का मोलर द्रव्यमान = 120 g mol–1)

A
2.35 m
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B
12.5 m
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C
15.2 m
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D
8.75 m
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Solution

The correct option is B 12.5 m
Solution

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