Interpretation: To identify the limiting reagent in the given reaction.
Concept Introduction: The formation of products is dependent on the number of reactants. The reactant that is consumed first is known as the limiting reactant; when this reactant is consumed completely, then there will be no more formation of products.
Answer to Problem 55A
The limiting reagent is phosphoric acid.
Explanation of Solution
The given
When one mole of phosphoric acid reacts with three moles of sodium hydroxide it yields one mole of sodium phosphate and three moles of water.
Calculation for moles of sodium hydroxide is as follows:
Calculation for moles of phosphoric acid is as follows:
Thus, the reactant that is consumed first is phosphoric acid as the number of moles is less than sodium.
Thus, the limiting reagent is phosphoric acid.
Chapter 12 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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