Answer ALL parts of this question. An aspirin tablet dissolved in sodium hydroxide solution gave sodium salicylate. The sodium salicylate gives a yellow colour and absorbs at 295 nm, which gave an estimated concentration of sodium salicylate of 0.00015 mol dm³. CO₂Na CO₂H NaOH (aq) Co Aspirin OH sodium salicylate

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Answer ALL parts of this question.
An aspirin tablet dissolved in sodium hydroxide solution gave sodium salicylate. The
sodium salicylate gives a yellow colour and absorbs at 295 nm, which gave an
estimated concentration of sodium salicylate of 0.00015 mol dm-³.
CO₂H
NaOH (aq)
CO₂Na
OH
sodium salicylate
Aspirin
(a) Explain the formation of sodium salicylate using a curly arrow mechanism.
(b) The solution of sodium salicylate was diluted to 50 cm³. How many moles are
in the 50 cm³?
(c) There were initially 250 cm³ of the original aspirin solution, so the total number
of moles of sodium salicylate in the original solution is 250 times that
calculated in part (b). Calculate the mass of aspirin in the tablet.
(MW of aspirin = 180 gmol-¹).
Transcribed Image Text:Answer ALL parts of this question. An aspirin tablet dissolved in sodium hydroxide solution gave sodium salicylate. The sodium salicylate gives a yellow colour and absorbs at 295 nm, which gave an estimated concentration of sodium salicylate of 0.00015 mol dm-³. CO₂H NaOH (aq) CO₂Na OH sodium salicylate Aspirin (a) Explain the formation of sodium salicylate using a curly arrow mechanism. (b) The solution of sodium salicylate was diluted to 50 cm³. How many moles are in the 50 cm³? (c) There were initially 250 cm³ of the original aspirin solution, so the total number of moles of sodium salicylate in the original solution is 250 times that calculated in part (b). Calculate the mass of aspirin in the tablet. (MW of aspirin = 180 gmol-¹).
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