solubility
True or False:
Acetate is always soluble no matter what it is paired with.
true
what is an acid?
acids produce or increase the concentration of the hydrogen ion in a solution
what are the units for molarity?
moles/ liter solution
neutralization
What is the oxidation number of the phosphorus in HPO3?
+5
Cl-, Br-, and I- are always water-soluble except when they are paired with...
Ag+, Pb2+, Hg2+, and Hg22+
what is a base?
bases are substances that increase the OH- ion concentration in a solution.
How many grams of Na2SO4 are required to make exactly 0.250L of 55mM Na2SO4?
55mM = .055M
.055M * (.250L)= .01375 moles
0.01375 * ( 142g/ 1 mole) = 1.95g Na2SO4
It takes 83 mL of a 0.45 M NaOH solution to neutralize 235 mL of an HCl solution. What is the concentration of the HCl solution?
.16 M HCl
what is the oxidation number of Mn in MnO4-?
+7
complete the following reaction. then write the complete ionic equation and the net ionic equation.
NH4Br(aq) + Pb(C2H3O2)2(aq) →
2NH4Br(aq) + Pb(C2H3O2)2(aq) → 2NH4C2H3O2(aq) + PbBr2(s)
Complete: 2NH4+(aq) + 2Br−(aq) + Pb2+(aq) + 2C2H3O2−(aq) → 2NH4+(aq) + 2C2H3O2−(aq) + PbBr2(s)
Net: 2Br−(aq) + Pb2+(aq) → PbBr2(s)
H3PO4+ 3KOH→ 3H2O+ K3PO4 is an example of...
a neutralization reaction
acid + base → water + salts
How much 0.05 M HCl solution can be made by diluting 250 mL of 10 M HCl?
M1V1 = M2V2
(10 M)(250 mL) = (0.05 M) x
x = 50,000 mL
It takes 38 mL of 0.75 M NaOH solution to completely neutralize 155 mL of a sulfuric acid solution (H2SO4). What is the concentration of the H2SO4 solution?
.092 M H2SO4
What are the oxidizing agent and the reducing agent in the following...
Pb(OH)42- + ClO- --> Cl- + PbO2
oxidizing: ClO-
reducing: Pb(OH)42-
complete the following reaction, write the complete ionic equation, and write the net ionic equation.
2K3PO4(aq) + 3Cd(C2H3O2)2(aq) →
2K3PO4(aq) + 3Cd(C2H3O2)2(aq) → 6KC2H3O2(aq) + Cd3(PO4)2(s)
Complete: 6K+(aq) + 2PO43−(aq) + 3Cd2+(aq) + 6C2H3O2−(aq)→ 6K+(aq) + 6C2H3O2−(aq) + Cd3(PO4)2(s)
Net: 2PO43−(aq) + 3Cd2+(aq) → Cd3(PO4)2(s)
what are your strong bases?
group 1 hydroxides and group 2 hydroxides
I have 345 mL of a 1.5 M NaCl solution. If I boil the water until the volume of the solution is 250 mL, what will the molarity of the solution be?
M1V1 = M2V2
(1.5 M)(345 mL) = x (250 mL)
x = 2.07 M
It takes 12.5 mL of a 0.30 M HCl solution to neutralize 285 mL of NaOH solution. What is the concentration of the NaOH solution?
.013 M NaOH
Balance the following in acidic solution...
PH3 + I2 ---> H3PO2 - + I -
4H2O + 2PH3 + 3I2---> 2H3PO2- + 6I- + 8H+
Write the soluble guidelines tables for water-soluble and water-insoluble.
Water Soluble:
Always soluble Except when paired with:
NO3-, C2H3O2-, ClO4-
Cl-, Br-, I- Ag+, Pb 2+, Hg 2+, Hg22+
SO4- Ca 2+, Ba 2+, Sr 2+, Pb 2+, Ag+, Hg22+
Water-insoluble:
Always insoluble Except
S 2-, OH- NH4+, Ca 2+, Sr 2+, Ba 2+, group one
CO32-, PO43- NH4+, group one
list and name all of the strong acids you need to know for your exam.
HCl (hydrochloric acid)
HBr (hydrobromic acid)
H2SO4 (sulfuric acid)
HNO3 (nitric acid)
HClO3 (chloric acid)
HClO4 (perchloric acid)
how do you make an acid solution?
Start with a 500ml flask, add half of the water (not up to the line on the flask), put the lid on and shake flask, take lid off, add water up to the line, put the lid on, do 20 inversions.
Calculate the mass of the percipitate fomred when we mix 1.25 L of 0.05M Pb(NO3)2 and 2 L of 0.0250M Na2SO4.
15.2 g PbSO4
Balance the following in basic Solution
Zn ===> Zn(OH)4 2- + H2
Zn ===> Zn(OH)4 2- + H2
4H2O + Zn ===> Zn(OH)4 2- + 4H+ + 2e
2 e + 2 H2O ===> H2 + 2 OH -
2 OH - + Zn + 2 H2O ===> Zn(OH)4 2- + H2