Calculating the molarity of a solution?

a) What is the molarity of 25cm3 NaCO3, that has a concentration of 6.4054dm3?

b)What is the molarity 25cm3 of 0.1M NaOH?

c) What is the molarity 25cm3 of 0.05M H2SO4?

1 Answer
anor277
Feb 18, 2018

None of your questions are valid....

Explanation:

By definition, #"molarity"# is given by the quotient....

#"Molarity"-="Moles of solute"/"Volume of solution"#...and thus has units of #mol*L^-1#.

For #a.# you specify (i) a volume, and (ii) another volume...we cannot address the molarity...

For #b.# the molarity has already been specified...i.e. #0.1*mol*L^-1# with respect to #NaOH(aq)#..of course, given the volume of #25*mL# we could specify the moles and mass of the solute...

And the same situation applies for #c.#

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