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CBSE Class 11-science Answered

What is the difference between Molarity and Molality ?

Asked by Yukti Jha | 12 May, 2014, 09:39: AM
answered-by-expert Expert Answer

Molarity tells us the number of moles of solute in exactly one liter of a solution. (Note that molarity is spelled with an "r" and is represented by a capital M.)

 

Molarity =   moles of solute

                Volume of solution in litres

 

Molality, m, tells us the number of moles of solute dissolved in exactly one kilogram of solvent. (Note that molality is spelled with two "l"'s and represented by a lower case m.)

 

Molality = moles of solute

              Mass of solvent in kilograms

 

Answered by Vaibhav Chavan | 12 May, 2014, 10:03: AM
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