Q. Water is a good solvent of ionic salts because of which of the following reasons?
Answer: it has a high dipole moment
Notes: Water is a strongly polar solvent with substantial charge separation operating in the individual molecule. And we could represent by the formulation δ+H−δ−O−δ+H and of course, this is the basis of hydrogen-bonding as an intermolecular force, and also for the ridiculously high normal boiling point of water as a small molecule.
The water dipole is capable of acting as a donor towards lewis-acidic metal centers and of course, most of the time, with inorganic salts, we got to spend a lot of time and trouble drying the salts, and removing water prior to reaction.
Water should be a good donor towards cations and indeed it is. It can offer some stabilization to anions and this all attempts to explain why water is such a prodigiously good solvent. Most substances, inorganic or organic, have some solubility in aqueous media. Ionic solutes can tend to have substantial solubilities.