Glucose is more sluble in water because it has moreno . of -OH groups on it that can hydrogen bond withwater molecules. C-OH-----------H-O-H But NaCl is an ionic compound it can dissociates to Na+ & Cl-ions only, it will not form hydrogen bonding like glucose. Solution Glucose is more sluble in water because it has moreno . of -OH groups on it that can hydrogen bond withwater molecules. C-OH-----------H-O-H But NaCl is an ionic compound it can dissociates to Na+ & Cl-ions only, it will not form hydrogen bonding like glucose..