Molar mass of a diacidic base is $$40g$$. Density of its aqueous solution is $$1$$ $$g/$$ cc. More concentrated solution among the following is

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Infinity Learn · Accepted Answer

(1) $$1$$ M solution means      $$1$$ mole (40$$ $$g) of solute dissolved in $$1000$$ ml solution      $$Wsolute=40$$ g; $$Vsolution=1000$$ ml $$Wsolution=V$$×d $$Wsolution=1000$$ g  $$Wsolvent=(1000-40)g=960$$ $$g(2)$$ $$1$$ molal solution means      $$1$$ mole (40) g solute in $$1000$$ g solvent        $$Wsolute=40$$ g; $$Wsolvent=1000$$ g;(3) $$1$$ N solution means       $$1$$ GEW (20$$ $$g) of solute in $$1000$$ ml solution       $$Wsolute=20$$ g; $$Wsolvent=980$$ g;(4) $$1$$ % wv solution means        $$Wsolute=1$$ g ; $$Vsolution=100$$ ml ; $$Wsolution=100$$ g ; $$Wsolvent=99$$ g ;Comparing all the $$solution1$$ M .   .   .   $$40$$ g of solute .   .   .   $$960$$ g of $$solvent1$$ m .   .   .   $$40$$ g of solute .   .   .   $$1000$$ g of $$solvent1$$ N .   .   .   $$40$$ g of solute .   .   .   $$1960$$ g of $$solvent1$$ %wv .   .   .   $$40$$ g of solute .   .   .   $$3960$$ g of solvent∴$$1$$ M is most concentrated.

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