Question

Which of the following is true regarding the solubility of ionic compounds? *
1 point
They are soluble in water
They are water insoluble
They are soluble in oil
None of the statements is true.

Answer 1

Answer:

Solubility of ionic compounds in water depends on the type of ions that form the compound.

For example, AgNO3 is soluble in water but AgCl is insoluble in water.

Hence,

Your Answer:

1. They are soluble in water
2. They are water insoluble

Answer 2

Ionic compounds are soluble in water.

• When atoms combine by the transfer of valence electrons from 1 atom to another to complete their octet in their valence shell, the bond form is an ionic bond.
• The compounds which undergo ionic bonds are called ionic compounds.
• Electrovalent bonds are polar, hence soluble in polar solvents like water.

solubility in non-polar solvents:

• Ionic compounds are not soluble in non-polar solvents like $C_{6} H_{6$ , $CCl_{4}$ etc.

solubility in polar solvents :

• As the dielectric constant increase, the force between two ions decreases. water dissociates ionic compounds on the basis of its higher dielectric constant.
• If ionic-dipole interactions> ionic-ionic interactions, then ionic compounds are soluble in water
• If ionic-dipole interactions< ionic-ionic interactions, then ionic compounds are insoluble in water.

Hence, ionic compounds are soluble in polar solvents ie water, and not in non-polar solvents like oil. The correct answer is (A)

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