katie.collllins
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Which is the limiting reacting when 0.500 mol of ammonium hydroxide and 0.500 mol of phosphoric acid are allowed to react?

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Pigster
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Since you have the same number of mol of both, compare the stoichiometry of the balanced overall equation and see which one you need more of.
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hraaami
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You need 3 moles of ammonium hydroxide for each mole of phosphoric acid. So the ammonium hydroxide is the limiting reagent and the phosphoric acid is in excess
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