What determines the solubility of a molecule in water?

Factors effecting the solubility of a molecule in water;

a)  Polarity:

                 As water is a polar solvent therefore, the molecule to be dissolved in it should be polar in nature as "Like dissolves Like". Polar means having a partial positive end and partial negative end. As in water oxygen has partail negative charge and hydrogen atoms has partial positive charges so, the molecule must contain these two charges. Therefore, it will develop intermolecular interactions and will dissolve it in water.

b)  Temperature:

                          Solubility of substance increases with increasing temperature. Hence, by increasing temperature the solubility of polar molecule can increase in water.

c)  Surface Area:

                         Greater the surface area greater is the solubility of solute in solvent because it will provide more surface to water solvent to interact with the solute.

explanation:

venn diagram is pictorial representation with of circles showing the relation between two finite sets or things. the intersection part of two circles conveys the relation present in between those sets or things.

here in the venn diagram of sand and salt two circles represent sand and salt. but the area falling under the intersection of these circle represents the mixture of sand and salt.

so, in a venn diagram the mixture will be placed in a middle that is in between the intersection of two circles.