What is Exactly a mole?? molarity molality? and normality?

Asked by Abhishek Wagle | 3rd Nov, 2013, 01:01: PM

Expert Answer:

Mole : A mole is defined as the amount of a substance containing elementary particles like atoms,molecules or ions in 12g of carbon.
Molarity :  It is defined as the number of moles of solute dissolved per litre of solution. It is expressed by the symbol M .Its units are mol/L.
Molality : It is defined as number of moles of solute present per kg of the solvent. It is denoted by symbol “m”. Its units are mol/kg.
Normality:  Normality of a solution is defined as the number of gram equivalents of a solute dissolved per litre of the solution. It is expressed by the symbol N.Its units are gram eq L-1.

 

 

Answered by Vaibhav Chavan | 5th Nov, 2013, 09:12: AM

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