CHEM 6A Lecture Notes - Lecture 19: Ammonia, Trioxidane, Electron Pair

• School: UCSD
• Department: Chemistry and Biochemistry
• Course: CHEM 6A
• Professor: Thomas Bussey

Document Summary

Water: polar solvent (the substance which you have more of, polar: electron in the covalent bonds aren"t shared equally, creating positive and negative poles. Ionic compound dissolution: not a reaction; physical because you don"t make anything new, sphere of hydration: water molecules oriented to maximize attraction. Electrolytes: when soluble ionic compounds are dissolved in h2o, the resulting solution conducts electricity (movement of charges) Mobile ions move and conduct a current. Covalent compound dissolution: most don"t dissociate into ions when dissolved in water, with the exception of acids. Determining if ionic compounds are soluble: determined by a series of empirically-determined rules, soluble salts. Typically contains at least one ion from groups 1a, nh4. When solutions of salts are mixed, a solid forms if ions of an insoluble salt is present. A molecular equation shows formulas of compounds. An ionic equation shows ions of compounds. A net ionic equation shows only ions that form solids.