Ascientist wants to make a solution of tribasic sodium phosphate, na3po4, for a laboratory experiment. how many grams of na3po4 will be needed to produce 650. ml of a solution that has a concentration of na+ ions of 1.20 m ?

Na₃PO₄ > 3Na(+) + PO₄(3-)
y-y3yy

3y = 1.2
y = 0,4M

Na₃PO₄ > 3Na(+) + PO₄(3-)
0,4-0,41,20,4
01,20,4

C = n/V
n = C×V
n = 0,4×0,65L
n = 0,26 mol Na₃PO₄

mNa₃PO₄: (23×3)+31+(16×4) = 164 g/mol

164g 1 mol
Xg 0,26 mol
X = 164×0,26
X = 42,64g Na₂SO₄

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