Names of Compounds
barium sulfide
Ba2S
Increasing volume at constant pressure will have what effect on pressure AND who's law is this?
Pressure will be decreased, according to BOYLE'S Law
What are the products of of the following reaction...
NaCl + Ag2SO4 -->
Will one of the products precipitate out of solution? If so, which one?
Na2SO4 and AgCl will be produced. AgCl will form a precipitate.
Arrhenius defined an acid as a compound that ____ while bases ______
Arrhenius defined an acid as a compound that produce [H+] (hydronium ion) while bases produce [OH-] (hydroxide ion)
What is the specific heat of water?
4.18 J/g-oC
HClO
hypochlorous acid
Charles law states that __________ and __________ are (directly/indirectly) proportional
Kelvin Temperature and Volume (or other way around) are directly proportional.
Which type of mixture will show the Tyndall effect?
Colloids and Suspensions have particles large enough to reflect light (Tyndall effect). Solutions have particles too small (atomic sized) to reflect light.
What is the pH of a solution that has a hydroxide ion concentration of 1 x 10-10 MOH-?
If [OH-] = 1 x 10-10 MOH-, then [H+] is 1 x 10-4.
pH is the negative power of 10, so pH = 4.
KOH --> K+ + OH- deltaH = -56 kJ
is this reaction endo or exothermic?
exothermic, since delta H is negative
MnO4-
permanganate ion
List the following gases in order of their rate of effusion (fastest to slowest), according to Graham's law...
HCl, Ne, Xe, He, CH4
He is fastest, then CH4, Ne, HCl, Xe (slowest)
Henry's Law states that ___________ is directly proportional to __________ at constant temperature.
Solubility of a gas dissolved in an aqueous solution is directly proportional to pressure at constant temperature.
If a solution feels slippery when touched, it will be ______ when phenolphthalein is added.
pink. Feeling slippery is a property of a base.
Br2 (liquid) --> Br2 (solid)
When calculated, the entropy change will be (positive or negative)
Negative, the system will become more ordered, less random. The change in entropy will decrease
Fe2O3
iron (III) oxide
(yes, without the roman numeral, it is incorrect)
Avodgadro's law states that at constant temperature and _________, equal __________ of gas contain equal _________ of gas.
Avodgadro's law states that at constant temperature and pressure, equal volumes of gas contain equal number of particles (or equal moles) of gas.
Molarity (M) defines the concentration of a solution as the number of moles per _______, whereas molality defines concentration as moles per _____.
Molarity (M) defines the concentration of a solution as the number of moles per liter solution, whereas molality defines concentration as moles per kg solvent.
Identify the following as strong acid, weak acid, strong base or weak base.
Ca(OH)2 | HClO4 | NH3 | HNO2
Ca(OH)2 (SB) | HClO4 (SA) | NH3 (WB)| HNO2 (WA)
The table of standard enthalpies list the change in enthalpies for a formation reaction. What are the specific properties than make a reaction a formation reaction?
The reactants must be elements in their native state, and produce exactly one mole of product.
sodium carbonate tetrahydrate
Na2CO3 - 4 H2O
Name any two assumptions made for an ideal gas.
Any two will do...
gas particles have no volume, no attractive forces (such as LD, dipole, H-Bonding), collisions are elastic (no kinetic energy is lost), all particles at the same temperature have the same kinetic energy
When mixing water and acid...
...do what you oughta, add acid to wattta.
If it takes 10.00 ml of 1M NaOH to neutralize 5.00 ml of HCl, what is the molarity of the HCl solution.
M1V1 = M2V2
(1M) (10.00 ml) = M2 (5.00 ml)
M2 = 2.00 MHCl
CH4 + 2 O2 --> CO2 + 2 H2O delta H = -800 kJ
What is the change in energy when 4 mol of O2 is reacted? Is energy released or absorbed?
4 mol O2 * -800 kJ/2 mol O2 = -1600 kJ
1600 kJ of energy is released, the reaction is exothermic.