posted by Maddy on .
A scientist wants to make a solution of tribasic sodium phosphate, , for a laboratory experiment. How many grams of will be needed to produce 625 of a solution that has a concentration of ions of 0.800
You want how many moles of Na^+? That is M x L = 0.800M x 0.625L =??
Convert that to moles Na3PO4 remmbering that there are 3 atoms Na per 1 molecule Na3PO4; therefore,
?moles Na^+ x (1 mole Na3PO4/3 moles Na^+) = moles Na3PO4.
moles Na3PO4 = grams Na3PO4 x molar mass Na3PO4.
How many grams of Na3PO4 will be needed to produce 625mLof a solution that has a concentration of Na+ ions of 1.50M?