You want how many moles? That's mols = M x L = 0.6 x 0.400 L = ?
How many grams is that? That's mols = grams/molar mass. You know molar mass and mols solve for grams NaOH.
Take that many grams of PURE solid NaOH, add the solid pellets to a 400 mL volumetric flask, add some water, swirl to dissolve, let cool, add distilled water to the mark on the flask, stopper, mix thoroughly, label.
NOTE: NaOH is not a primary standard as it comes out of the reagent bottle.It absorbs CO2 from the air and it's quick to do so. This is an OK answer if a freshman class but it isn't a good way for accurate work. If this is in advanced chemistry this is not an OK answer UNLESS you have PURE NaOH.
Describe how to correctly prepare 400 mL of 0.6 M NaOH starting from solid NaOH.
1 answer