[blah44]

i know the answer but dont know how to properly work it out,could someone please *delete me*!

Q. which of these is most likely to dissolve in tetrachloromethane?

a)barium chloride
b)caesium chloride
c)calcium chloride
d)phosphorus chloride

i know the answer is D but im unsure as to how to work it out

[Astrokel]

What do you know about CCl4 polarity?

What's the main difference between the 4 compounds?

Is it possible for a polar substance to dissolve in a non polar-solvent?

Try it out !

[rahul2ghosh]

Astrokel gave a very good hint.

Here we will follow the universal rule that Like dissolves Like.

The solvent in question is CCl₄. It is a very good example of Non-Polar Solvent.

Now out of four, if you see the first three options : all of them are metal compounds. So a clear demarcation of Cation and Anion. Obviously they will then be quite polar in nature and thus won't get along well with CCl₄!!.

PCl₃ has very little dipole moment due to nullifying effect of the dipole moment vector of three chloride ions. Though it has a little bit of dipole moment due to lone pairs of electrons on phosphorus. Therefore it can now dissolve in CCl₄... without any TENSION !!!