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Problem: The fizz produced when an Alka-Seltzer® tablet is dissolved in water is due to the reaction between sodium bicarbonate (NaHCO3) and citric acid (H3C6H5O7): 3 NaHCO3(aq) + H3C6H5O7(aq) → 3 CO2(g) + 3 H2O(l) + Na3C6H5O7 (aq). In a certain experiment 1.30 g of sodium bicarbonate and 1.30 g of citric acid are allowed to react.How many grams of carbon dioxide form?

FREE Expert Solution

Find the limiting reactant, which is the reactant that forms the less amount of product. 

  • determines the maximum amount of the product


Balanced equation: 3 NaHCO3(aq) + H3C6H5O7(aq) → 3 CO2(g) + 3 H2O(l) + Na3C6H5O7(aq)


Mole to mole comparison:

  • 3 mol NaHCOform 3 mol CO2
  • 1 mole H3C6H5Oforms 3 mol CO2


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Problem Details

The fizz produced when an Alka-Seltzer® tablet is dissolved in water is due to the reaction between sodium bicarbonate (NaHCO3) and citric acid (H3C6H5O7): 3 NaHCO3(aq) + H3C6H5O7(aq) → 3 CO2(g) + 3 H2O(l) + Na3C6H5O7 (aq). In a certain experiment 1.30 g of sodium bicarbonate and 1.30 g of citric acid are allowed to react.

How many grams of carbon dioxide form?

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Limiting Reagent concept. If you need more Limiting Reagent practice, you can also practice Limiting Reagent practice problems.