Flashcards in Chapter 6 Deck (29):
A rxn is favored when K is _______ 1.
Concentrations of solutes should be expressed as _________.
Concentrations of pure solids, pure liquids, and solvents are omitted because they are _______. They do not participate in the equilibrium.
What are the 4 main solubility rules? (solubility rules)
1. NO3- (soluble)
2. Na+, K+, NH4+ (soluble)
3. Cl- (soluble)---------> except AgCl, PbCl2, Hg2Cl2
4. SO4^2- (soluble)--> except BaSo4, PbSO4, CaSO4
What is the new value of K if a rxn is reversed?
_____ _____ for a rxn is the heat absorbed or released when the reaction takes place under constant applied pressure.
For a rxn which (delta H) is positive is said to
For a rxn in which (delta H) is negative is said to
When a chemical or physical change occurs in a reversible manner at a constant temperature, the ______ ______ ,
is equal to the heat absorbed divided by the temperature.
The change in ____________ is the arbiter between opposing tendencies of H and S.
Gibbs free energy
What is the equation for Gibbs free energy?
G= H - T S
A rxn is favored (proceeds) when delta G is _________.
If K>Q then the rxn favors the ___________.
If K=Q than the rxn is said to be __________.
__________ ________ is the equilibrium constant for the rxn in which a solid salt dissolves to give its constituent ions in solution.
A ________ solution is one that contains excess undissolved solid.
A salt will be ______ soluble if one of its constituent ions is already present in the solution and this is called _______ ___ _______.
common ion effect
The increased solubility arises from the formation of _________.
The _________ makes a salt less soluble and _______ make salts more soluble.
common ion effect
__________ consist of two or more simple ions bonded to one another.
A _______ is any atom or group of atoms attached to the species of interest.
A ___________ acid accepts a pair of *electrons* from a ___________ base.
The product of the rxn between a Lewis acid and Lewis base is known as an _______.
In the molecules PbI+, PbI3-, and PbI4^2-, iodine is said to be the ________ of Pb2+.
ligand (donates e-)
_______ and _______ classified acids as proton donors and bases as proton acceptors.
Bronsted and Lowry
How does Bronsted and Lowry classify acids compared to Lewis?
Bronsted/Lowry ---> Protons
When a proton is transferred from one molecule to another molecule of a protic solvent, the rxn is called __________.