What is the molar concentration of a 2%(weightvolume) solution of sodium hydroxide?

1 Answer
Jun 29, 2017

We assume that we deal with a 2% weightvolume solution......

Explanation:

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

Concentration=Moles of soluteVolume of solution

=2.0g39.99gmol1100mL×103LmL1=0.500molL1

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