This unusual structure and strong polarity are what give water many of its unusual properties, such as its high surface tension and thermal capacity, in addition to its ability to dissolve so many ionic compounds. Unlike most solutes, some ionic compounds, such as table salt, vary little in solubility with temperature.
This is a list of the solubility rules for ionic solids in water. Solubility is a result of an interaction between polar water molecules and the ions which make up a crystal. Two forces determine the extent to which the solution will occur:
Water is a covalent polar compound (it has positive and negative poles). Also, ionic compound tend to form complex lattice networks and structures (see the picture). When the salt is put in water, the water is pulling Na^+ on one side and Cl^- on the other side.
Water is a polar solvent and thus most ionic compounds will be soluble in water. But there are exceptions to it too. CaCO3 is one such example. Covalent compounds generally insoluble in water but the most common example for some exceptions to this is sugar. 985 views · View 1 Upvoter.
However, why are ionic compounds soluble in water? That is because water is a polar molecule. The positive end (H) of the water molecule is attracted to the anions on the surface of the solid ionic compound while the negative end (O) is attracted towards the cations, forming bonds with the anions and cations respectively.
But when these ionic compounds are dissolved in water dielectric constant of the medium is decreases, which decreases the electrostatic force of attraction. Hence they are splits into respective ions which are associated by the large number of solvent molecules that is solvation of ions takes place. So ionic compounds are soluble in water.
Ionic compounds dissolve in water if the energy given off when the ions interact with water molecules compensates for the energy needed to break the ionic bonds in the solid and the energy required to separate the water molecules so that the ions can be inserted into solution. ... Solubility Rules for Ionic Compounds in Water. Soluble Salts: 1 ...
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We'll look at what happens when you dissolve ionic and covalent compounds in water. Ionic compounds break apart into the ions that make them up, a process called dissociation, while covalent ...
Best Answer: When ionic bonds form, one atom becomes positively charged, while the other becomes negatively charged. This is because one has to lose a negatively charged electron and another has to gain one. Water is a covalent compound that exhibits the property of polarity, where the electrons hang around one side of the molecule more than the other, giving a water molecule positive and ...