Reaction Speed
Name three factors that can affect reaction rate.
Nature of the reactants, concentration of the reactants, surface area of the reactants, temperature, presence of catalyst(s)
What temperature scale must always be used when doing gas calculations?
Kelvin
Give the solubility products equilibrium expression for iron (II) hydroxide when it has been placed in water.
Ksp= [Fe2+][OH-]2
Cells that are thermodynamically unfavorable.
electrolytic
Particles that can behave as either acids or bases are said to be
amphoteric
What two things must be true of particles when they collide in order for a reaction to take place?
sufficient energy and proper orientation
Give the value of the ideal gas constant (you must include units).
0.08206 atm L / mol K
8.314 J/mol K
Copper(I) bromide has a measured solubility of 2.0 × 10−4 mol/L at 25°C. Calculate its Ksp value.
Ksp = 4.0 × 10−8
The electrode where reduction occurs.
cathode
These acids don't ionize much
weak acids
Experiment Initial concentration Initial rate
1 1.0 13
2 2.0 26
3 3.0 39
What is the order of the reactant described in the above data set?
1st order
What is Standard Temperature and Pressure?
1 atm and 273 K
Calculate the Ksp value for bismuth sulfide (Bi2S3), which has a solubility of 1.0 × 10−15 mol/L at 25°C.
Ksp = 1.1 × 10−73
What is the direction of electron flow in an electrochemical cell?
from anode to cathode
Give the conjugate acid of ammonia
NH4+
If given concentration and time data, how can you determine the order of the reaction?
graph concentration versus time, ln of concentration vs time, and 1/concentration vs time. If 1st graph is linear it is 0, if 2nd graph is linear it is 1, if 3rd graph is linear it is 2.
Which of the following gases will effuse at the greatest rate
carbon dioxide, oxygen, chlorine, hydrogen
hydrogen
If Q<Ksp what do you know about the solution?
It is unsaturated.
This is used to maintain electrical neutrality in a galvanic cell
salt bridge
Write the Ka expression for acetic acid.
Ka=[H+][C2H3O2-]/[HC2H3O2]
1/(M min)
Under the same conditions which of the following would occupy the greatest volume
44 grams of carbon dioxide, 16 grams of oxygen, 15 grams of water vapor, 1.0 grams of hydrogen
Calculate the solubility of solid CaF2 (Ksp = 4.0 × 10−11) in a 0.025 M NaF solution.
6.4 × 10-8 mol/L
This is a measure of the the electromotive force of the electrons as they travel in an electrochemical cell?
cell potential
Write the equilibrium expression for an aqueous solution of ammonia.
Kb = [NH4+][OH-]/[NH3]