5. All of the following statement describes compounds, EXCEPT?
2 answers:
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The relative volumes of chloroform and water that should be used is 9:10
Concentration of solution in chloroform = ( moles of chloroform )
Concentration of solution in water = ( moles of water )
Dissociation constant at ;
Concentration of solution in chloroform / Concentration of solution in water
Meaning;
Since mole is present in chloroform and
mole is present in water, Total mole of Caffeine present is
Now, we substitute our given values into the equation
Therefore, the relative volumes of chloroform and water that should be used is 9:10
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Explanation:
The given data is as follows.
Solvent 1 = benzene, Solvent 2 = water
= 2.7,
= 100 mL
= 10 mL, weight of compound = 1 g
Extract = 3
Therefore, calculate the fraction remaining as follows.
=
=
=
Hence, weight of compound to be extracted = weight of compound - fraction remaining
= 1 -
= 0.00001
or, =
Thus, we can conclude that weight of compound that could be extracted is .