What is the phase transition where gas becomes liquid?
Condensation
Is a solution homogeneous or heterogeneous?
Homogeneous
Which is the conjugate base in this reaction:
HCO3- (aq) + HF (aq) ⇌ H2CO3 (aq) + F- (aq)
F-
What thermodynamic quantity expresses the degree of disorder in a system?
Entropy
What is the oxidation number of O in H2O?
-2
What is the weakest intermolecular force?
London dispersion force
When liquids do not mix and form separate layers, the resulting solution is ______.
Immiscible
A ____ is a solution that maintains a relatively constant pH when small amounts of acid or base are added.
Buffer
At equilibrium is the change in free energy positive, negative, or 0?
0
In a galvanic cell, reduction occurs at the _____.
Cathode
Sodium chloride is an example of a _____ solid.
Ionic
If you add more solute to solution, what happens to the boiling point?
It increases
Will a weak acid have a low or high Ka?
Low
When water evaporates, is the change in entropy positive or negative?
Positive
What type of battery is rechargeable and is often used in electronic devices like cell phones?
Lithium ion battery
A mixture with particles that do not settle out is called a _____.
Colloid
Which law can be used to understand vapor pressure of a solution?
Raoult's Law
A ____ donates an electron pair to form a covalent bond.
Lewis base
Fuel cells are a kind of galvanic cell that also uses ______.
Fuel and an oxidant
What process uses electricity to break down a compound?
Electrolysis
What is the phase of the compound in Region 2?
Liquid
What are the 4 colligative properties?
Vapor pressure lowering, boiling point elevation, freezing point depression, osmotic pressure
According to Le Chatelier's Principle, if you lower the concentration of a reactant, what direction will the reaction proceed?
To the left (reverse)
If a reaction has a positive change in enthalpy and a negative change in entropy, is it spontaneous?
No
How do you calculate cell potential for a galvanic cell?
Subtract the standard cell potential of the anode from that of the cathode.