If cells kept for sometime in 1 M solution of sucrose and 1 M solution of NaCl. The water potential ( w ø ) of the cells kept in:

The osmotic concentration of a solution largely depends upon the ratio between the number of solute and solvent particles present in a given solution. For example, a molar solution of sodium chloride has twice the osmotic concentration than that of sucrose. This is  because sodium chloride is an electrolyte and dissociates almost completely into Na+ and Cl- ions.