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Dissolution in CCL4

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Date Posted: 7/2/2008 12:51:34 AM  Status: Closed
Dissolution in CCL4
Course Textbook Chapter Problem
General Chemistry N/A N/A N/A
Question Details:
Which one of the following substances is more likely to dissolve in CCl4?

a) HCl
b) NaCl
c) CH3CH2OH
d) HBr
e) CBr4
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Answers:

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Date Posted: 7/2/2008 2:58:51 AM  Status: Live
Asker's Rating: Lifesaver   
Response:
 Generally the polar substances like HCl,ethanol are soluble in the polar solvents,where as nonpolar substances are soluble the nonpolar solvents..
 In the above case CCl4 is a non polar solvent even though it contains polar bonds because the symmetry of the molecule.
 In the above options excluding e) all are polar compounds ,Hence they are not dissolves in the non polar solvents like CCl4 \
 Hence CBr4 is more likely to dissolve in CCl4 .
 
Nec's Comment:
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Date Posted: 7/2/2008 7:48:30 AM  Status: Live
Asker's Rating: Helpful   
Response:
Like dissolves like
As CCl4 is Nonpolar solvent it dissolves in nonpolar solvent only.
Except CBr4 all others are polar.
Polarity of  a bond can be determined by determining the Electronegativity difference between 2 atoms in a molecule.
a) HCl (Higher E.N Difference(Polar)
b) NaCl (salt but not solvent)
c) CH3CH2OH(polar due to Oh group)
d) HBr(Higher E.N Difference(Polar)
Nec's Comment:
Thank you!



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