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chapter 18 & 19
definitions
11
Chemistry
Undergraduate 1
04/20/2008

Additional Chemistry Flashcards

 


 

Cards

Term

Common Ion Effect

Definition

Ionization of the acid is affected by the presence of its conjugate base

Term

Buffer

Definition

Causes a solution to resist a change in pH when a strong acid or base is added

 

needs a 2 substances capable of absorbing OH- and H3O+ ions without reacting with each other.

Term

Henderson-Hasselbalch equation

Definition

pH=pKa+log[conjugate base/acid]

Term
Titrant
Definition
Substance being added during titration
Term

solubility product constant Ksp

Definition

The value of the equilibrium constant that reflects the solubility of a compound

Term

Spontaneous

Definition
A change that occurs without outside intervention.
Term
Second law of thermodynamics
Definition
States that in a spontaneous process, the entropy of the universe increases
Term
Boltzmann Equation for Entropy
Definition

S=k*logW

 

k=Boltzmann Constant

Term
Third law of thermodynamics
Definition
There is no disorder in a perfect crystal at 0 K
Term
Gibbs free energy, G
Definition

G=H-TS

 

H=enthalpy

T=temperature

S=entropy

Term

Standard free energy of formation

 

Definition
the energy change when forming one mole of the compound from the component elements, with products and reactants in their standard states.
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