Presentation on theme: "What happens when you put"— Presentation transcript:
1 What happens when you put AgNO3 (aq) + NaCl(aq) AgCl(s) + NaNO3(aq)What happens when you putAgNO3 and NaCl in water?
2 What really happens when you put AgNO3 (aq) + NaCl(aq) AgCl(s) + NaNO3(aq)What really happens when you putAgNO3 and NaCl in water?
3 NaCl (aq) Na +1 (aq) + Cl -1 (aq) KEY POINT: really means: “dissociated ions”or“ions in solution”
4 What is Dissolving ?When an ionic compound (eg salt) dissolves in water, the compound disassociates. (breaks apart into cations and anions)Ex: Ca(NO3)2(s) Ca2+(aq) + 2NO3-(aq)When a covalent compound (eg sugar) dissolves in water, the molecules simply disperse; they do not disassociate. Molecules of the covalent compounds simply disperse due to attraction with polar water molecules.
5 An Ionic Compound Dissolves: A Covalent Compound Dissolves:
23 Complete molecular equation- describes double replacement reactionComplete ionic equation-more accurately shows the reacting species as ions and the products either as ions or a precipitateNet ionic equation-focuses only on the ions REACTINGSpectator ions are those ions that do NOT participate in the reaction
24 PREDICTING THE FORMATION OF A PRECIPITATE Consider the possibility that a precipitate may form.Must use the solubility table on page 227 to decide.Possible outcomesNo visible reaction (nvr)Formation of one ppt.Formation of two ppt. (rare occurrence)