3NaOH + H3PO4 = Na3PO4 + 3H2O
n(H3PO4)= 392*19,6/98 = 0,784
n(NaOH) = 3*0,784 = 2,352
m(NaOH) = 2,352*40 = 94,08
m(p-pa) = 94,08/14*100=672
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Verified answer
3NaOH + H3PO4 = Na3PO4 + 3H2O
n(H3PO4)= 392*19,6/98 = 0,784
n(NaOH) = 3*0,784 = 2,352
m(NaOH) = 2,352*40 = 94,08
m(p-pa) = 94,08/14*100=672