chemical reactions unit 7 1. chemical equations 2 feo 2 (s) + 2 h 2 (g) fe (s) + 2 h 2 o (l) nacl...

Chemical Reactions Unit 7 1

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Chemical Reactions

Unit 7

Chemical Equations

FeO2 (s) + 2 H2(g) Fe (s) + 2 H2O (l)

NaCl (aq) + AgNO3 (aq) AgCl (s) + NaNO3 (aq)

Symbol Found in Chemical Equation Physical Meaning

Produces - equivalent to an equal sign in

an algebraic expression

+ Reacts with or is produced with

(s) Compound is a solid

(l) Compound is a liquid

(g) Compound is a gas

(aq) Compound is aqueous (dissolved in water

Reactants Products

Chemical Equations

A chemical equation is a representation for a chemical reaction that uses chemical symbols and chemical formulas instead of words to describe the change that occurs

in a chemical reaction.

2 Mg + O2 MgOMg + Cl2 MgCl2

Reactants Products

Conservation of Matter!Remember that atoms cannot be created or destroyed!

Page 4: Chemical Reactions Unit 7 1. Chemical Equations 2 FeO 2 (s) + 2 H 2 (g) Fe (s) + 2 H 2 O (l) NaCl (aq) + AgNO 3 (aq) AgCl (s) + NaNO 3 (aq) Symbol

Balancing Chemical Equations

CH4 + O2 CO2 + H2OFe3O4 + H2 Fe + H2O

Ca + N2 Ca3N2

C4H10 + O2 CO2 + H2O

NH4NO3 N2 + O2 + H2O

Remember that atoms cannot be created or destroyed!

SCl2 + NaF SF4 + S2Cl2 + NaCl

Chemical Equations

Synthesis ReactionsA single product is produced from 2 or more reactants

X + Y Z

SO3 + H2O H2SO4

Decomposition ReactionsA single reactant is converted into 2 or more products

Z X + Y

H2SO4 SO3 + H2O

Chemical Equations

Single Replacement ReactionsOne element within a compound is replaced with another element

XY + Z ZY + X

H2SO4 + Mg2+ MgSO4 + 2 H+

Double Replacement Reactions2 compounds switch parts with each other to form two new compounds

AB + XY AX + BY

MgSO4 + CaCO3 CaSO4 + MgCO3

Page 7: Chemical Reactions Unit 7 1. Chemical Equations 2 FeO 2 (s) + 2 H 2 (g) Fe (s) + 2 H 2 O (l) NaCl (aq) + AgNO 3 (aq) AgCl (s) + NaNO 3 (aq) Symbol

Combustion ReactionsA substance reacts with O2 (typically with the help of a flame)

2 C4H10 + 13 O2 8 CO2 + 10 H2O

Chemical Equations

AQ-1. AQ-2, AQ-3, AQ-4, AQ-5

Thermodynamic Favorability Entropy and Free Energygenchem1.chem.okstate.edu/1515SP18/Personal/Lec011515.pdfBa(OH) 2·8H 2O(s) + 2NH 4Cl(s) " BaCl 2(aq) + 10H 2O(l) + 2NH 3(aq) H 2(g)

Zn(s) → Zn 2+ (aq) + 2 e - OxidationAnode Cu 2+ (aq) + 2 e - → Cu (s)ReductionCathode

NOTES Lesson 13: Ionic Equations & Intro to the Mole with ... › uploads › 1 › 1 › 7 › 3 › 1173… · CaCl2 (aq) + 2 AgNO3 (aq) Ca(NO3)2 (aq) + 2 AgCl (s) Molecular equation:

CHEMISTRY 161 Chapter 4. REVISION HCl(aq) + NaOH(aq) → NaCl(aq) + H 2 O(l) H + (aq) + OH - (aq) → H 2 O(l) (Arrhenius) HCl(aq) + NH 3 (aq) → NH 4 Cl(aq)

1 Salt Solubility Chapter 18. 2 Solubility product constant K sp K sp Unitless Unitless CaF 2(s) Ca 2+ (aq) + 2F - (aq) CaF 2(s) Ca 2+ (aq) + 2F -

Zn(s) + H SO (aq) ----> ZnSO (aq) + H (g)

Formation of Ions Net Ionic Equations - Sciencemc-c.weebly.com/uploads/3/1/4/2/31425937/lesson-net...Pb(NO3)2 (aq) + 2 KI(aq) PbI2 (s) + 2 KNO3(aq) insoluble according to your solubility

Electrochemical Cells. Spontaneous Redox Reaction - Zn + Cu 2+ Zn (s) + Cu 2+ (aq) Zn 2+ (aq) + Cu (s)

Electron-Transfer Reactions Cu 2+ (aq) + Zn(s) Cu(s) + Zn 2+ (aq)

Pb(NO 3 ) 2 (aq) + 2KI(aq) PbI 2 (s) + 2KNO 3 (aq) In order to conduct this reaction both the lead (II) nitrate and the potassium iodide must be made

Weak Acids and Bases Mg (s) + 2HCl (aq) --> MgCl 2 (aq) + H 2 (aq) Mg (s) + 2CH 3 COOH (aq) --> Mg(CH 3 COO 2 ) 2 (aq) + H 2 (aq)

DANYAL · PDF fileof 1.0 mol/dm3 sodium thiosulfate according to the equation as shown: Na2S203 (aq) + 2 HCI (aq) 2 NaCl (aq) + S (s) + S02 (g) + H20 (l) What causes the reaction to

Protocol - biophysics.sbg.ac.at · NaOH(aq) + HCl(aq) → 2H. 2. O(l) + Na + (aq) + Cl-(aq) An . indicator. enables detection of the . stoichiometric point (S), the stage at which

Solubility Equilibria (Sec 6-4) K sp = solubility product AgCl(s) = Ag + (aq) + Cl - (aq) K sp = CaF 2 (s) = Ca 2+ (aq) + 2F - (aq) K sp = in general A

Cambridge International Examinations Cambridge Pre-U ... International... · iodine back to iodide ions. I 2(aq) + 2S 2O 3 2−(aq) 2I−(aq) + S 4O 6 2−(aq) Only when all the thiosulfate

NaCl (aq) + Mg(NO3)2 (aq) NaNO3 (aq) + MgCl2 (aq) 2

2+(aq) 3- (aq) Oxidation and Reduction

Aula #23 · AgCl (s) Ag+ (aq) + Cl-(aq) Ksp = [Ag +][Cl K sp is the solubility product constant MgF 2 (s) Mg2+ (aq) + 2F-(aq) Ksp = [Mg 2+][F]2 Ag 2 CO 3 (s) 2Ag+ (aq) + CO3 2-(aq)

Fe 3+ (aq) + SCN - (aq) Fe(SCN) 2+ (aq) colorless

Vol. III, No. 2, April, 1909 · asnuoaq oa pno.ld u! å{uuauum.tad pasnoq aq ptnoqs asau!/ aq 01 atll -au!ud s! s,tunasn1Ý 's*uyurud alqenlu,x asotu JO auo aq u! yo uo!lrnuasa.ld

1 Equilbrium Constant and EXTERNAL EFFECTS Formation of stalactites and stalagmites CaCO 3 (s) + H 2 O(liq) + CO 2 (g) Ca 2+ (aq) + 2 HCO 3 - (aq)

Representing electrochemical cells The electrochemical cell established by the following half cells: Zn(s) --> Zn 2+ (aq) + 2 e - Cu 2+ (aq) + 2 e - -->

Some Types of Chemical Reactions. (1) 2Mg (s) + O 2(g) → 2MgO (s) (2) CaCO 3(s) → CaO (s) + CO 2(g) (3) NaOH (aq) + HCl (aq) → NaCl (aq) + H 2 O (l)

Reactions between Elements and Compounds - …science10jones.weebly.com/uploads/8/7/2/9/87297868/... · Web viewCu(s ) + AgNO3(aq) ( Cu(NO3)2(aq) + Ag(s) Reactants yield products

CHEMICAL KINETICS H 2 S (g) + Zn 2+ (aq) ⇆ ZnS (s) + 2H + (aq) Chemical reactions can be viewed from different perspectives 4D-1 (of 21) STOICHIOMETRY

Solubility Equilibria 16.6 AgCl (s) Ag + (aq) + Cl - (aq) K sp = [Ag + ][Cl - ]K sp is the solubility product constant MgF 2 (s) Mg 2+ (aq) + 2F - (aq)

AgNO 3 ( aq ) + NaCl ( aq ) AgCl ( s ) + NaNO 3 ( aq )

CHAPITRE 3 ÉQUILIBRES DE PRÉCIPITATION. 1 ) INTRODUCTION Exemples. Entartrage : CaCO 3 (s)Ca 2+ (aq) + CO 3 2- (aq) 1 2 sens 1 : sens direct : dissolution

Aqueous Reactions and Solution Stoichiometry (continuation) · 2003-12-14 · -reaction where electrons are exchanged. 2 Na(s) + 2 H2O(l) Æ2 NaOH(aq) + H2(g) 2Na0(s) ÆNa+(aq) +

Fe 3+ (aq) + SCN - (aq) ⇆ FeSCN 2+ (aq) (blood red) EQUILIBRIUM CONSTANT DETERMINATION

Battery Chemistry Electrochemical Cells Cu 2+ (aq) + Zn(s) Cu(s) + Zn 2+ (aq)

AgNO 3 ( aq ) + NaCl( aq ) AgCl( s ) + NaNO 3 ( aq )

Acids, bases and combustion - · Web viewPbCO3(s) + 2HNO3(aq) Pb(NO3)2(aq) + CO2(g) + H2O(l) √1 React the resulting solution with solution of sodium sulphate i.e Na2SO4(aq) + PB(NO3)2(aq)