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

1 Answer
anor277
Aug 9, 2016

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.

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