Record the concentration of the NaOH solution. It has been standardized by your

Question

Record the concentration of the NaOH solution. It has been standardized by your TA.

Simultaneously prepare two of the following solutions

Obtain the mass of an aspirin tablet and add it to an Erlenmeyer flask.

Using a 50mL volumetric pipette, add 50.00mL of NaOH to the tablet in the flask.

Heat the flasks in a hot water bath (near boiling) for 5 minutes. (big beaker with water in it). While you are wating standardize the HCl.

calculate the moles and mass of acetylsalicylic acid in each tablet (molar mass = 180.16 g/mol)

Aspirin Tablet 0.351 grams

NaOH 0.0962 M

HCl 0.11M

Initial volume 0mL

Final volume 11.5mL

Explanation / Answer

acetylsalicylic acid is nothing but aspirin

mass of acetylsalicylic acid = 0.351 g

moles = mass / molar mass

           = 0.351 / 180.16

           = 0.00195

moles = 0.00195

note : from the data i understood these things only. any doubts post comment

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