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
