Precipitation Reactions

Slides:

Advertisements

Similar presentations

Unit 5 - Double Replacement Replacements

Advertisements

Predicting the Products of Double Replacement Reactions

TYPES OF CHEMICAL REACTIONS, CONTINUED. AB + CD AD + CB DOUBLE REPLACEMENT Ions in two compounds change partners Cation of one compound combines with.

Precipitation Reactions Graphic: Wikimedia Commons User Tubifex.

Precipitation Reactions Graphic: Wikimedia Commons User Tubifex.

Net Ionic Equations An Application of Double Replacement Reactions.

Notes on Total and Net Ionic Equations. Ionic Compounds (Metal and Nonmetal) (Cation and Anion) If soluble these compounds will DISSOLVE and DISSOCIATE.

SCH 3U1 1. Solubility of Ionic Compounds 2 All solutes will have some solubility in water. “Insoluble” substances simply have extremely low solubility.

Reactions in Aqueous Solutions

Lecture 72/1/06. Precipitation reactions What are they? Solubility?

Solubility Rules.

Solubility Rules and Precipitation Reactions. Not all ionic compounds dissolve! Instead of doing experiments all the time to see which ones will dissolve,

Precipitation Reactions. Double Replacement Reactions The ions of two compounds exchange places in an aqueous solution to form two new compounds. AX +

 The ability to dissolve or break down into its component ions in a liquid  Example:  NaCl is soluble  Completely dissolves in water  AgCl is insoluble.

Unit 2 - Chemical Reactions. Double displacement occurs between ions in aqueous solution. A reaction will occur when a pair of ions come together to produce.

Precipitates and Solubility

Unit 4 Part 2 Solutions. Components of a Solution  A solution is composed of two or more pure substances, one of which is a solvent and the other a solute.

Aqueous Reactions Pb(NO 3 ) 2 (s) + H 2 O (l)  leadnitrate(II) KI (s) potassiumiodide + H 2 O (l)  Pb 2+ (aq) + 2 NO 3 - (aq)+ K + (aq) + I - (aq) 

Objective:  write a formula equation, complete ionic equation, and net ionic equation that represent a reaction.

Precipitation Reactions ● A reaction in which two solutions are mixed an insoluble solid (precipitate) is formed – Double replacement – ions switch partners.

2NaBr(aq) + Pb(OH)2(aq)  PbBr2(s) + 2NaOH(aq)

Solubility Rules. The terms soluble and insoluble are relative terms. soluble insoluble solute Solubility: the maximum amount of solute needed to make.

Reactions in Aqueous Solution Objectives: 1. Write and balance net ionic equations 2. Use solubility rules to predict the precipitate formed in double.

THE 8 RULES OF SOLUBILITY CODY CARTER P.7 2/8/15.

Lecture 0502 Types of Reactions. 1. Synthesis [composition] elements  compounds Synthesis of Sodium Chloride.

Predicting solubility. Pb(NO 3 ) 2 (aq) + 2 KI(aq)  PbI 2 (s) + 2KNO 3 (aq) overall ionic equation, which separates all the ions out: Pb 2+ (aq) + 2.

Predicting solubility. Using the table of solubilities we can now predict which of the products of a double replacement reaction will be insoluble (form.

Net Ionic Equations An Application of Double Replacement Reactions.

Aqueous Solutions.

Net ionic equations Na + Al 3+ S 2– 2Ca 2+ PO 4 3– 3Cl –

CH 8 Solubility Rules & Net Ionic Equations. Chemical Reactions Many chemical reactions take place in solution. This means that the ionic compounds are.

Chemistry I Honors Solutions Lesson #5 Reactions in Aqueous Phase.

Ch 8 Single replacement reactions  A + BX  AX + B  You will have a chart of activity series  More active metals will replace less active metals from.

Solubility Rules and Precipitation Reactions

Chemistry – Feb 1, 2017 P3 Challenge –

Balancing Chemical Equations

Ionic Equations and Acid-Base Reactions

Solubility Rules and Precipitation Reactions

Chemistry 141 Monday, October 2, 2017 Lecture 12

WARM UP List 3 different types of redox reactions and show a simple equation of each.

Unit 5: Solutions and Solubility

Solubility Rules and Precipitation Reactions

Solution Chemistry solution homogeneous mix of two or more substances

Chapter 4: Reactions in Aqueous Solutions

Types of reactions: Combination, Decomposition, Single Replacement, Double Replacement Combustion reaction involves the burning of a compound, usually.

Clicker #1 When lead(II) nitrate and potassium iodide are mixed, what precipitate will form? Pb(NO3)2(aq) + KI(aq) → A) KNO3 B) KI C) Pb(NO3)2 D) PbI2.

Net Ionic Equations For precipitates only.

Clicker #1 When lead(II) nitrate and potassium iodide are mixed, what precipitate will form? Pb(NO3)2(aq) + KI(aq) → A) KNO3 B) KI C) Pb(NO3)2 D) PbI2.

Replacement Reactions

Clicker #1 When lead(II) nitrate and potassium iodide are mixed, what precipitate will form? Pb(NO3)2(aq) + KI(aq) → A) KNO3 B) KI C) Pb(NO3)2 D) PbI2.

Clicker #1 When lead(II) nitrate and potassium iodide are mixed, what precipitate will form? Pb(NO3)2(aq) + KI(aq) → A) KNO3 B) KI C) Pb(NO3)2 D) PbI2.

Na and PO4 Iron (III) and Chlorine

4. 2 Continued… Writing Net Ionic Equations Learning Goals: 1

Chemistry – Feb 21, 2019 _____Pb(NO3)2  _____PbO + _____NO2 + _____O2

Solubility and Net Ionic Equations

Precipitation Reactions

Solubility Rules and Net Ionic Equations

4. 2 Continued… Writing Net Ionic Equations Learning Goals: 1

Chapter 5 Lecture Outline

Chemistry – Feb 21, 2018 P3 – Nomenclature quiz 6

Double Replacement Reactions

Solubility and Precipitation Rules

Precipitation Reactions

8.5 NOTES Types of Reactions Double Replacement Net Ionics

8.6 NOTES Types of Reactions Double Replacement

Announcements “Limiting Reactants” lab write-up due tomorrow at start of discussion. Online HW 5 (Type I) due Monday 10/21 and (Type II) due Wednesday.

Chemistry – Feb 22, 2018 P3 – Nomenclature quiz 5

Clicker #1 When lead(II) nitrate and potassium iodide are mixed, what precipitate will form? Pb(NO3)2(aq) + KI(aq) → A) KNO3 B) KI C) Pb(NO3)2 D) PbI2.

Precipitation Reactions Pages

Presentation transcript:

Precipitation Reactions Graphic: Wikimedia Commons User Tubifex

Double Replacement Reactions The ions of two compounds exchange places in an aqueous solution to form two new compounds. AX + BY  AY + BX One of the compounds formed is usually a precipitate (an insoluble solid), an insoluble gas that bubbles out of solution, or a molecular compound, usually water.

Double replacement forming a precipitate… Lead(II) nitrate + potassium iodide  lead(II) iodide + potassium nitrate Double replacement (ionic) equation Pb(NO3)2(aq) + 2KI(aq)  PbI2(s) + 2KNO3(aq) Complete ionic equation shows compounds as aqueous ions Pb2+(aq) + 2 NO3-(aq) + 2 K+(aq) +2 I-(aq)  PbI2(s) + 2K+(aq) + 2 NO3-(aq) Net ionic equation eliminates the spectator ions Pb2+(aq) + 2 I-(aq)  PbI2(s)

Solubility Rules – AP Chemistry All sodium, potassium, ammonium, and nitrate salts are soluble in water. Memorization of other “solubility rules” is beyond the scope of this course and the AP Exam. Therefore, the following slides are only for your amusement, and will not be tested 

Solubility Rules – Mostly Soluble Ion Solubility Exceptions NO3- Soluble None ClO4- Na+ K+ NH4+ Cl-, I- Pb2+, Ag+, Hg22+ SO42- Ca2+, Ba2+, Sr2+, Pb2+, Ag+, Hg2+

Solubility Rules – Mostly Insoluble Ion Solubility Exceptions CO32- Insoluble Group IA and NH4+ PO43- OH- Group IA and Ca2+, Ba2+, Sr2+ S2- Groups IA, IIA, and NH4+

Solubility Chart: Common salts at 25C S = Soluble I = Insoluble P = Partially Soluble X = Other