1. Questions

Chem.

An aspirin tablet weighing 0.400 g has been analyzed and contains 68.2 % ASA (180.16 g/mol) by mass. A student dissolved
the tablet in hot NaOH and the cooled solution was diluted with DI water to the mark in a 250 mL volumetric flask. Exactly 3.00 mL
of the solution was pipetted into a 100 mL volumetric flask and diluted to the mark with FeCl3 solution.
The concentration of the diluted solution is

  1. 👍
  2. 👎
  3. 👁
Joanne

  1. The concn of what in the diluted solution? the original sample or the ASA in the original sample? And what kind of units for the concn?
    The original sample is
    (0.400 g/250 mL) x (3 mL/100 mL) = ?? g/mL

    If you want the concn ASA, you start with 0.4 x 0.682 = ?? and use that number in place of the 0.400 g.

    If you want molarity, change the first solution to molarity.
    0.400 x 0.682 x (1 mol/180.16 g) x 1000 mL/250 mL then the dilution is x (3 mL/100 mL) = ?? M.
    Check my work.

    1. 👍
    2. 👎
    DrBob222

  2. Your work is correct, DrBob222. Thanks for the help

    1. 👍
    2. 👎
    Anonymous

  4. so whats the actual answer for the concentration? i keep trying and im getting the wrong answer.

    1. 👍
    2. 👎
    ted

Respond to this Question

First Name

Your Response

Similar Questions

  1. Art

    Which inference about Near Eastern cultures is best supported by this image? (Its a image of Cappadocian Tablet with Cuneiform Inscription Assyrian) A. All citizens of the ancient Near East were excellent writers. B. This tablet

  2. Chemistry

    1)The chemical formula for aspirin is C9H8O4. What is the mass of 0.40 mol of aspirin? How would I find this? 2)The gram molecular mass of oxygen is 16.0 g right? 3)How would I find the mass, in grams, of 3.01 x 10^23 molecules of

  3. Chemistry

    How many moles of C9H8O4 are in a 0.700 g tablet of aspirin? n^C9H8O4 =?????? How many molecules of C9H8O4 are in this tablet? N^C9H8O4 =????? How many carbon atoms are in the tablet? N^C =??????

  4. chemistry

    You take an aspirin tablet (a compound consisting solely of carbon, hydrogen, and oxygen) with a mass of 1.00 g, combust it under an oxygen atmosphere, and collect 2.20 g of carbon dioxide and 0.400 g water. The molar mass of

  1. Chemistry

    The vapor pressure of chloroform is 173.11 mm Hg at 25 degrees celsius. A nonvolatile, nonelectrolyte that dissolves in chloroform is aspirin. Calculate the vapor pressure of the solution at 25 degrees celsius when 6.243g of

  2. math

    A veterinarian has instructed Harrison to give his 75lb dog one 325 mg aspirin tablet for arthritis. the amount of aspirin A remaining in the dog's body after t minutes can be expressed by A=325(1/2)^(t/15). write and solve a

  3. Chemistry

    Pharmacists sell tablets containing magnesium hydroxide, Mg(OH)2, to combat indigestion. A student carried out an investigation to find the percentage by mass of Mg(OH)2 in an indigestion tablet. The student reacted the tablet

  4. chemistry, plz check work

    NH3+H2S-->NH4HS

  1. chemistry - synthesis of aspirin

    wanted to calculate the theoretical and actual yield of aspirin. mass of salicylic acid = 2.005 g But isn't salicylic acid differ. from acetic acid? If so, how do we find the mass of acetic acid in this experiment volume of acetic

  2. Chemistry

    Acetylsalicylic acid (C9H8O4) is a monoprotic acid commonly known as "aspirin." A typical aspirin tablet, however, contains only a small amount of the acid. In an experiment to determine its composition, an aspirin tablet was

  3. Chemistry

    The vapor pressure of diethyl ether is 463.57 mm Hg at 25 degrees celsius. How many grams of aspirin C9H8O4, a non volatile nonelectrolyte (mw=180.1g/mol), must be added to 216.7g of ether to reduce the vapor pressure to 453.74 mm

  4. Chemistry

    Determine the amount of Sodium Salicylate required to make 100mL of a 0.01M stock solution. {this is from the spectrometric analysis of a commercial aspirin tablet lab}

You can view more similar questions or ask a new question.