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What is the relation between molal elevation constant and molecular elevation constant? In concentration term CAN WE WRITE (Molecular elevation constant= 10*Molal elevation constant)???
Asked by harjotbhatia0172 | 22 Apr, 2023, 02:05: AM
answered-by-expert Expert Answer
Dear Student,
 
Molarity means 1 mole solute / 1 litre solution
Molality means 1 mole solute / 1 kg solvent
 
Weight in kg = volume in litres × density in kg / Litre
 
only for water 1 kg = 1 L
But for other solvents, weight in kg does not equal volume in litre.
Also, the denominator of molarity formula indicates  1 L of solution.
While, the denominator of molality formula indicates 1 kg of solvent.
Thus, if you will remove the solute from 1 L of solution, the total volume of pure solvent would come out less than 1 L.
Hence, even in case of water where 1 L = 1 kg, still there will be little difference between 1 molar solution and 1 molal solution due to the difference of solution and solvent terms in denominators.
 
Therefore, the given equation is incorrect.
Answered by | 22 Apr, 2023, 10:13: PM

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