CHEM 107 Lecture Notes - Lecture 29: Chemical Equation, Spectator Ion, Sodium Hydroxide
Document Summary
Two soluble ionic compounds react to form an insoluble product. Naoh (aq) + cacl2 (cid:314) nacl (aq) + ca(oh)2 (s) Ca2+ and oh- ions are removed from the solution. Shows all reactants and products as if they were intact, undissociated compounds. Shows all soluble ionic substances dissociated into ions. This gives more accurate information about species in solution. 2agno3 (aq) + na2cro4 (aq) (cid:314) ag2cro4 (s) + 2nano3 (aq) Ions that are not involved in the actual chemical change. Appear unchanged on both sides of the total ionic equation. 2- (aq) (cid:314) ag2cro4 (s) + 2na+ (aq) + Eliminates the spectator ions and only shows the actual chemical change. 2- (aq) (cid:314) ag2cro4 (s) + 2na+ (aq) + 2no3. Write the total ionic and the net ionic equation for the following reaction: 2naoh(aq) + cacl2 (aq) (cid:314) 2nacl (aq) + ca(oh)2 (s) 2na+ (aq) + 2oh- (aq) + ca2+ + 2cl- (aq) (cid:314) 2na+(aq) + 2cl- (aq) + ca(oh)2 (s)
