CHE 120 Exam 2

Naming Binary Acids i.e HF

"hydro" + name anion, change to -ic, add acid - hydrofluoric acid

Give Formula: Ammonium Perbromate

(NH4^+, BrO4^-) = NH4BrO4^-

Calcium Permanganate

(ca^2+, MnO4^-) = Ca(MnO4)2

Naming Molecular Compounds

- First element is not a metal - Name first element, use greek prefixes - Name second element as an anion (-ide) - Always use prefixes to identify #atoms of second element 1-Mono 2-Di 3-Tri 4-Tetra 5-Penta 6-Hexa 7-Hepta 8-Octa 9-Nona 10-Deca

Naming Acids with Polyatomic Anions

- Never use prefix hydro - name polyatomic anion (-ate or -ite) -ate=ic -ite=ous +acid

C,N,O,F,Cl, Br, I elements end in

-ate, 3 subscript

Other elements:

-ate, 4 subscript

Calculate molarity go a solution prepared by dissolving 4.498g of KBr in enough water to make 250.00mL solution

0.03780 mol KBr - 0.1512mL

What is the concentration of resulting solution if 15.0mL of 2.50M solution is diluted to final volume of 250.0mL?

0.150 M of solution

-ite

1 oxygen less than -ate

How many mL of 18M H2SO4 are needed to make 500mL of a 0.500M H2SO4 solution?

14 mL

How many mL of a solution which is 0.459 M contains 3.26g Na2SO4?

49.9mL

Balance: __5C+__SO2= __CS2+__CO

5C+2SO2 = CS2+4CO

% Yield

= Actual yield / x 100 Theoretical Yield

Silver (I) Oxide

Ag2O

Al(NO2)3

Aluminum Nitrite

BaSO4

Beryllium Solfate

Strong Acids

CSI-NBC HCl, H2SO4, HI, HNO3, HBr, HCLO4, HCLO3

Name Compound: CsOH

Cesium Hydroxide

Give Chemical Formula: Cobalt (II) Phosphide

Co3P2

Combustion Reaction

Combustion reactions always involve molecular oxygen O2. Products are Carbon dioxide and water as well as heat

Cu2S

Copper (I) Sulfide

CuS

Copper (II) Sulfide

S2O3

Disulfur Trioxide

Hydrobromic acid

HBr (aq)

Hydrogen Monochloride

HCl

Precipitation Reaction

Happens when anion and cation combine in an aqueous solution i.e AgNO3+NaCl = AgCl+NaNO3 - are insoluble in aqueous solutions!

H2S

Hydrosulfuric Acid

+1 oxygen

Hyper-

-1 oxygen

Hypo-

HBrO

Hypobromous Acid

Electrolytes

IONIC SOLIDS(metal) that conduct electricity - Undergo DISSOCIATION REACTION i.e NaCl = Na+(aq) +Cl- (aq) K2CO3 = 2K+(aq)+CO3^2-(aq)

Ionization Reaction

Ionization is the process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons to form ions i.e HCl g)+H2O(l) =H3O+(aq) + Cl-(aq)

FECl2

Iron (II) Chloride

FeCl3

Iron (III) Chloride

Diluting Solutions

M1V1=M2V2(diluted)

Mg(ClO2)2

Magnesium Chlorite

Naming Binary Compounds

Name first metal, -ide to anion

Transition Metals

Name metal, identify charge with Roman Numeral, name anion (-ide)

HNO2

Nitrous Acid

Non Electrolytes

No electricity, MOLECULES - Any and ALL molecular compounds i.e C6H12O6 (s) = C6H12O6 (aq) DOES NOT DISSOCIATE

Net Ionic Equation

Only show the soluble,strong electrolytes reacting. (omit ones that go through reaction unchanged)

4

Per-

H3PO4

Phosphoric Acid

Tin (IV)Telluride

Sn2Te4= SnTe2

Neutralization Reaction

Strong Acid and Strong Base combine to form a salt and water

Balance: __Xe+__F2 = __XeF6

Xe+3Fe2 = XEF6

ZnSe

Zinc (II) Selenide

Molarity is

mol/L