Answer: (a) H20 (b) CH3OH
Explanation:
Ionic solids are known to dissolve in polar substances. KCl is given to us as an ionic solid, so we need to figure out from the two options which are polar so that it can dissolve the ionic solid of KCl.
(A) Water (H2O) is a polar covalent compound, so it will be readily able to dissolve an ionic solid. CCl4 is a nonpolar compound, and usually, nonpolar compounds cannot dissolve ionic or polar solids due to the lack of electronegativity.
(B) CH3OH is polar, so it will be able to dissolve CH3OH. Benzene is a nonpolar compound which cannot dissolve ionic or polar solids.
