Question

Sodium Chloride is the LEAST soluble in which of the following liquids?

a. H2O
b. CCl4
c. HF
d. CH3OH
e. CH3OOH

I know NaCl is a polar molecule...and a dipole-dipole IMF bond?

My guess is b because it's nonpolar and I think it's a London Dispersion IMF. Is this right?

Also,

Which of the following is LEAST soluble in water?

a. (NH4)SO4
b. KMnO4
c. BaCO3
d. Zn(NO3)2
e. Na3PO4

This one I took a wild guess because I'm not really sure what any of the molecules are...help with this one plz?

Thank you!
btw my guess for the second one was d.
For the first one the answer is b because CCl4 is a nonpolar molecule and NaCl can only dissolve in polar/ionic substances.

The second one is c because all molecules containing NH4+ are soluble as well as K+, NO3-, and Na+

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