How many moles of sodium bicarbonate would be needed to react with all of the theoretical aspirin?

Assuming 325 mg of theoretical aspirin, 0.00180 moles of sodium bicarbonate would be needed to react with all of the theoretical aspirin.

Explanation:

The question is incomplete because the amount of theoretical aspirin is missing.

I can solve with a hypothetical amount of aspirin (acetylsalicylic acid).

The chemical formula of acetylsalysilic acid is C₉H₈O₄.

Assume 325mg of pure acetilsalysilic acid.

There is one carboxylic acid group in the molecule of acetylsalicylic acid.

Sodium bicarbonate is NaHCO₃.

Then, 1 mole of NaHCO₃ will react with 1 mole of C₉H₈O₄.

Hence, the mole ratio for the reaction between sodium bicarbonate, NaHCO₃, and aspiring, C₉H₈O₄, will be 1 : 1.

NaHCO₃ + C₉H₈O₄ → NaC₉H₇O₄ + H₂O + CO₂

Find the number of moles of C₉H₈O₄ in 325mg.

The molar mass of C₉H₈O₄ is 180.158g/mol

Number of moles = mass in grams / molar mass

Mass in grams = 325mg * 1g / 1,000 mg = 0.325g

Number of moles = 0.325g / 180.158g/mol = 0.00180 moles of C₉H₈O₄.

Then, as the theoretical mole ratio is 1 : 1, the same amount, 0.00180 moles of sodium bicarbonate, would be needed to react with all of the theoretical aspirin.