Aspirin + NaOH

[oliveajah]

"In order to determine the aspirin content of a commercial aspirin tablet, a tablet weighing 0.400g was dissolved in aqueous ethanol and titrated with 0.100M NaOH solution: 16.7cm^3 of the NaOH was required to reach the end point. Under the conditions of the titration, only the Carboxylic acid group reacts with the NaOH".

Obviously, the question goes on to ask about moles in the aspirin, and the % by mass of aspirin in the tablet, but what I need to know is what is the balanced equation for this reaction?

thanks before.

Edited November 10, 2019 by Strange
Tidied formatting

[Strange]

This is Homework Help; in other words, first let us know your attempt to answer the question and then we may be able to help.

[studiot]

Thank you strange for resetting the question properly.

I would be very grateful if you could explain to Olive how to put th question in without overrunning the page.

1 hour ago, oliveajah said:

"In order to determine the aspirin content of a commercial aspirin tablet, a tablet weighing 0.400g was dissolved in aqueous ethanol and titrated with 0.100M NaOH solution: 16.7cm^3 of the NaOH was required to reach the end point. Under the conditions of the titration, only the Carboxylic acid group reacts with the NaOH".

Obviously, the question goes on to ask about moles in the aspirin, and the % by mass of aspirin in the tablet, but what I need to know is what is the balanced equation for this reaction?

thanks before.

So how many carboxylic acid groups can you identify on acetylsalicylic acid?

In other words is this a monoprotic or a diprotic acid?

 

Can you now continue?

 

Edited November 10, 2019 by studiot