In lab, I am to separate and purify benzophenone and pthalic acid from a mixture

Question

In lab, I am to separate and purify benzophenone and pthalic acid from a mixture also containing 10% glycine. No solvent is available that dissolves all of the components of my mixture. My current idea is to use cold water in the first step to separate the glycine from benzophenone and pthalic acid. From there, I don't know what to do just yet. I'm wondering if there is a better solvent to use in the first step other than chilled water, and if anyone feels confident in how to go about conducting this experiment before, do you have any pointers? Flow charts are nice!

Explanation / Answer

Benzophenone, is partially soluble in methyl alcohol and hexane but insoluble in water.

Phthalic acid is very soluble in boiling water, and is much less soluble in chilled water.

Glycine is very soluble in water. So first add chilled water, then glycine dissolves in it. Remaining two compounds benzophenone and pthalic acid are insoluble.

Use separating funnel, separate gylcine from the remaining two.

Now add boiling water,as pthalic acid is soluble in boiling water.

Benzophenone is insoluble in it.

We can separate these two also by using separating funnel.

flow chart:

1.add chilled water. (glycine dissolves in it)

2.Add boiled water.(pthalic acid dissolves in it)

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