Solubility Reactions. objectives

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1 Solubility Reactions objectives (#4 2) How do chemicals undergo a solubility reaction? (#4 2a) A student shall be able to identify if a reaction is a solubility reaction? (#4 2b) Students should be able to write molecular, ionic and net ionic equations for solubility reactions. (#4 2c) Students shall be able to model the solubility reactions. (#4 2d) Students can predict the products of solubility reactions. Nov 14 4:02 PM 1

2 Solubility Reactions Types 1. Precipitation (create insoluble solid) 2. Neutralization Reactions (acid/base, insoluble water as liquid) NaCl (s) AgNO 3(s) different combinations of ions have different solubilties Dec 4 4:48 AM 2

3 Solubility Reactions Types 1. Precipitation (create insoluble solid) 2. Neutralization Reactions (acid/base, insoluble water as liquid) NaCl (s) AgNO 3(s) different combinations of ions have different solubilties Dec 4 4:48 AM 3

4 Solubility Predicting products How do you predict the products? look at ions an switch partners NaCl (aq) AgNO 3 (aq) check out "other" combinations for solubility aqueous (aq) soluble (ions) solid (s) (precipitate) liquid (l) (water) insoluble sodium carbonate and barium nitrate: Dec 4 4:54 AM 4

5 Solubility Predicting products How do you predict the products? look at ions an switch partners NaCl (aq) AgNO 3 (aq) check out "other" combinations for solubility aqueous (aq) soluble (ions) solid (s) (precipitate) liquid (l) (water) insoluble sodium carbonate and barium nitrate: Dec 4 4:54 AM 5

6 big idea: different combinations of ions have different solubilties What "drives" a reaction? in order to have a reaction, need insoluble product forms at least one precipitate (s) (can have 2) or forms HOH(l) which is insoluble in neutralization rxn solubility: check solubilituy chart quick check first Na 1 K 1 always soluble NO 3 1 NH 4 1 use solubility chart: (aq) or (s)? H 2 O is (l) try these: KNO 3 NH 4 OH Ba(OH) 2 PbCl 2 BaS MgS H 2 O PbSO 4 PbBr 4 Fe(C 2 H 3 O 2 ) 2 NaCl Al 2 S 3 Dec 4 5:00 AM 6

7 big idea: different combinations of ions have different solubilties What "drives" a reaction? in order to have a reaction, need insoluble product forms at least one precipitate (s) (can have 2) or forms HOH(l) which is insoluble in neutralization rxn solubility: check solubility chart quick check first Na 1 K 1 always soluble NO 3 1 NH 4 1 use solubility chart: (aq) or (s)? H 2 O is (l) try these: KNO 3 NH 4 OH Ba(OH) 2 PbCl 2 BaS MgS H 2 O PbSO 4 PbBr 4 Fe(C 2 H 3 O 2 ) 2 NaCl Al 2 S 3 Dec 4 5:00 AM 7

8 big idea: different combinations of ions have different solubilties Molecular, ionic, and net ionic equations molecular: AgNO 3 ( ) NaCl( ) ionic: all (aq) are dissociated (remove spectator ions) Dec 4 5:08 AM 8

9 big idea: different combinations of ions have different solubilties Molecular, ionic, and net ionic equations molecular: AgNO 3 ( ) NaCl( ) ionic: all (aq) are dissociated (remove spectator ions) Dec 4 5:08 AM 9

10 ammonium nitrate sodium chloride molecular: ionic: if all aqueous... no rxn Dec 4 5:12 AM 10

11 ammonium nitrate sodium chloride molecular: ionic: if all aqueous... no rxn Dec 4 5:12 AM 11

12 Practice: 1. mol.: Na 3 PO 4(aq) MgCl 2(aq) 2. AgNO 3(aq) Cu(NO 3 ) 2(aq) 3. AgNO3 (aq) (NH4) 2 SO4 (aq) 4. AgNO 3(aq) K 2 CrO 4(aq) 5.NaBr (aq) Pb(NO 3 ) 2(aq) Dec 8 7:49 AM 12

13 Practice: 1. mol.: Na 3 PO 4(aq) MgCl 2(aq) 2. AgNO 3(aq) Cu(NO 3 ) 2(aq) 3. AgNO3 (aq) (NH4) 2 SO4 (aq) 4. AgNO 3(aq) K 2 CO 3(aq) 5.NaBr (aq) Pb(NO 3 ) 2(aq) Dec 8 7:49 AM 13

14 Solubility Reactions Neutralization reactions (acid base rxns): reactants: acid cation:, base anion: products: ( ) and salt (ionic substance) HCl (aq) NaOH (aq) H 2 SO 4(aq) Al(OH) 3(aq) HC 2 H 3 O 2 NaHCO 3 Nov 14 4:08 PM 14

15 Solubility Reactions Neutralization reactions (acid base rxns): reactants: acid cation:, base anion: products: ( ) and salt (ionic substance) HCl (aq) NaOH (aq) H 2 SO 4(aq) Al(OH) 3(aq) HC 2 H 3 O 2 NaHCO 3 Nov 14 4:08 PM 15

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