Question

H3PO4(aq) + 3 KOH(aq) → K3PO4(aq) + 3 H2O(l)
How many grams of potassium hydroxide are required to completely neutralize 3.23 grams of phosphoric acid?
H3PO4(aq) + 3 KOH(aq) → K3PO4(aq) + 3 H2O(l)

mols H3PO4 = grams/molar mass = ?
Using the coefficients in the balanced equation, convert mols H3PO4 to mols KOH.
Now convert mols KOH to grams. g = mols x molar mass = ?

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