Question

Why some solutes dissolve in water so quickly and some are not? Give reason with examples

Answer 1

Because some solutes may be electrolytes and some may be not, some may be polar (can form bond with the water) , while some may be non polar ( organic solvent).
Usually all salts are electrolytes, and dissolve immediately as compared to sugar which is non polar.

Hope will help you!!

Answer 2

Many solutes do not dissolve in water and that is because they are non-polar and do not interact well with water molecules. A common example is oil and water.