r to recrystallize as

Chemistry In Focus
7th Edition
ISBN:9781337399692
Author:Tro, Nivaldo J.
Publisher:Tro, Nivaldo J.
Chapter15: The Chemistry Of Household Products
Section: Chapter Questions
Problem 1SC
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L 8

D
Question 3
Which of the following are NOT reasons we can't use water to recrystallize aspirin?
1. The aspirin is too soluble in water at room temperature.
II. The melting point of aspirin is too low.
III. The ester functional group on aspirin can be hydrolyzed in the presence of hot water,
converting the aspirin into a different molecule.
IV. The presence of the carboxylic acid group on aspirin makes its solubility highly pH
dependent.
OIV
OI and II
||
|||
OIII and IV
Question 4
What information do you need in order to predict whether a solvent will make a good
recrystallization solvent for a given compound?
1. Solubility data or relative polarities
II. Chemical reactivity
III. Melting points of solutes and boiling points of solvents
IV. Melting points of solvents and boiling points of solutes
○ I, II, III
O II
O I, IV
O I, III, IV
I, II, IV
Transcribed Image Text:D Question 3 Which of the following are NOT reasons we can't use water to recrystallize aspirin? 1. The aspirin is too soluble in water at room temperature. II. The melting point of aspirin is too low. III. The ester functional group on aspirin can be hydrolyzed in the presence of hot water, converting the aspirin into a different molecule. IV. The presence of the carboxylic acid group on aspirin makes its solubility highly pH dependent. OIV OI and II || ||| OIII and IV Question 4 What information do you need in order to predict whether a solvent will make a good recrystallization solvent for a given compound? 1. Solubility data or relative polarities II. Chemical reactivity III. Melting points of solutes and boiling points of solvents IV. Melting points of solvents and boiling points of solutes ○ I, II, III O II O I, IV O I, III, IV I, II, IV
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