What is the molar concentration of a #2%("weight"/"volume")# solution of sodium hydroxide?

1 Answer
anor277
Jun 29, 2017

We assume that we deal with a #2%# #"weight"/"volume"# solution......

Explanation:

That is #2*g# of #"sodium hydroxide"# are dissolved in a #100*mL# volume of water........

#"Concentration"="Moles of solute"/"Volume of solution"#

#=((2.0*g)/(39.99*g*mol^-1))/(100*mLxx10^-3*L*mL^-1)=0.500*mol*L^-1#

Please note my assumption.......in questions of this kind normally the density of the solution would also be quoted.

Related questions
See all questions in Molarity
Impact of this question
6697 views around the world
You can reuse this answer
Creative Commons License