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Which solution has higher concentration, 1molar or 1 molal solution of the same solute? Give reason? |
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Answer» Solution :In aqueous solution, 1M solution means 1 mole of the solute in 1000 cc of the solution whereas 1 m solution means 1 mle of the solute in 1000 g of water ( = 1000 cc of water). TOTAL volume of 1 m solution GT 1000 cc due to presence of extra 1 mole of the solute. Hence, numer of moles/cc in 1 m solution will be less than that in 1 M solution. In other words, 1 M is more concentrated than 1 m. In non-aqueous solution, 1 M can be GREATER than, less than or equal to 1 m, depending UPON the DENSITY of the solution. |
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