SELECT * FROM question_mgmt as q WHERE id=3223 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=2 AND subId=9 AND chapterId=50 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED)
What properties of water make it useful as a solvent? What types of compound can it (i) dissolve, and (ii) hydrolyse?
A high value of dielectric constants (78.39 C2/Nm2) and dipole moment make water a universal solvent.
Water is able to dissolve most ionic and covalent compounds. Ionic compounds dissolve in water because of the ion-dipole interaction, whereas covalent compounds form hydrogen bonding and dissolve in water.
Water can hydrolyze metallic and non-metallic oxides, hydrides, carbides, phosphides, nitrides and various other salts. During hydrolysis, H+ and OH- ions of water interact with the reacting molecule.
Some reactions are:
CaO + H2O → Ca(OH)2
NaH + H2O → NaOH + H2
CaC2 + H2O → C2H2 + Ca(OH)2
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