Question

To make a `0.10*L` volume of `[NaOH](aq)=0.15*mol*L^-1`, what mass of sodium hydroxide is required?

Answer 1

Approx. `600*mg`

Explanation:

`"Moles of sodium hydroxide"` `=` `0.100*cancelLxx0.15*mol*cancel(L^-1)` `=` `0.015*mol`

`"Mass of sodium hydroxide"` `=` `0.015*cancel(mol)xx40.00*g*cancel(mol^-1)` `=` `??g`

It would be hard to measure such a mass of sodium hydroxide accurately inasmuch as the stuff is deliquescent, and absorbs atmospheric moisture readily. It would be better to make a solution of the approximate concentration, and then make an accurate determination of `[NaOH]` with standardized acid.