posted by .

A student weighed out 1.5g of salicylic acid into a flask and then added 4ml of acetic an hydride to react. He also added 5 drops of concentrated sulfuric acid. Density of acetic an hydride is 1.08g/ml and sulfuric acid is 1.85g/ml (sulfuric acid is a catalyst in this reaction). What is the limiting reagent in this reaction? and assuming the reaction went to completion how much product should be expected to be produced (theoretical yield)?

  • chemistry -

    Have you written the equation? It is a 1:1 reaction (1 mole SA and 1 mole acetic anhydride produces 1 mole aspirin).
    Convert 1.5 g SA to moles. mols = grams/molar mass.
    Convert 4 mL acetic anhydride to grams (using density), then to moles.

    Convert moles SA to moles product (aspirin).
    Convert moles acetic anhydride to moles product.
    It is quite likely that the two answer for moles of the product will not be the same which means one of them is wrong. The correct answer, in limiting reagent problems, is ALWAYS the smaller one and the reagent producing the smaller value is the limiting reagent.

    Now convert moles of the product to grams. g = moles x molar mass. This is the theoretical yield.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chemistry

    Methanol + Butanoic acid + Sulfuric acid = Pinapple Methanol + Salicylic acid + Sulfuric acid = wintergreen Ethanol + Methanoic acid + Sulfuric acid = rum How to write the chemical formulae for each?
  2. Organic Chemistry

    isopentyl alcohol is reacted with acetic acid to make isopentyl acetate through Fischer esterification. Sulfuric acid is used to assist the reaction. After the reaction, the solution is washed with sodium bicarbonate. What reactions …
  3. Chemistry

    This lab is ruining me. isopentyl acetate is a blend of isopentanol, acetic acid, and sulfuric acid. How can products be determined from this information?
  4. Gen Chem 1

    A tanker truck carrying 2.01×10^3kg of concentrated sulfuric acid solution tips over and spills its load. The sulfuic acid is 95.0% H2SO4 by mass and has a density of 1.84g/L. Sodium Carbonate (Na2CO3)is used to neutralize the the …
  5. chemistry

    A student found that there are 115 drops of glacial acetic acid in 2.00 mL. Calculate the number of drops of glacial acetic acid, HC2H3O2 required to make 225 mL of 0.1 M acetic acid solution
  6. Chemistry

    A chemist wants to be a supercook and wants to create 8%(m/v) acetic acud solution to be "extra strength" vinegar. if pure acetic acid Is a liquid density of 1.049 g/ml. how many ml of acetic acid should be dissolved to male 500 ml …
  7. chemistry

    Solutions of sulfuric acid and lead acetate react to form solid lead sulfate and a solution of acetic acid.5.80 of sulfuric acid and 5.80 of lead acetate are mixed. Calculate the number of grams of acetic acid present in the mixture …
  8. chemistry

    A solution is 40% acetic acid by mass. The density of this solution is 1.049 g/mL. Calculate the mass of pure acetic acid in 170 mL of this solution at 20 C. Answer in units of g The density of a solution of sulfuric acid is 1.29 g/cm3 …
  9. chemistry

    A chemist needs 33.5 g of concentrated sulfuric acid for an experiment. The density of concentrated sulfuric acid is 1.84 g/mL. What volume of the acid is required?
  10. Chemistry

    Enough concentrated sulfuric acid solution was added to provide 3 grams of sulfuric acid which dissolved i4 grams of pure fluorapatite. How much excess sulfuric acid was used?

More Similar Questions