Determine the formula of A. Molarity B. Molality C. Mole fraction D. Normality ?

1 Answer
anor277
Jul 29, 2018

Well, #"molarity"# is simply the quotient...#"molarity"="moles of solute"/"volume of solution"#

Explanation:

And #"molality"="moles of solute"/"kilograms of solvent"#...

For most, dilute, AQUEOUS solutions, #"molality"-="molarity"#.

And #"mole fraction"#. is given by the quotient...

#chi_"the mole fraction"="Moles of component"/"Total moles present in the mixture/solution"#

And #"normality"# is a bit of an old-fashioned term, that is used in acid base titrations. It refers to the number of moles of acid/base required for EQUIVALENCE in an acid-base titration. For instance, #0.100*mol*L^-1# #H_2SO_4(aq)# or #H_3PO_4(aq)# are #0.200*N# with respect to #NaOH#.

That is the acid REQUIRES TWO EQUIVS of hydronium for equivalence.

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