ENTROPY

HideShow resource information
What is entropy?
measure of the disorder of a system
1 of 11
what are the units of entropy?
J/K/mol
2 of 11
Define the standard entropy change of reaction
entropy change that accompanies a reaction in the molar quantities expresses in a chemical reaction, under standard condition and with all products and reactants in their standard states
3 of 11
What is a spontaneous reaction?
process that occurs without a continuous supply of energy
4 of 11
How can an endothermic reaction be spontaneous?
if entropy increases, it acts as the driving force of the reaction
5 of 11
What is free energy?
the balance between entropy and enthalpy, determines the feasibility of reactions
6 of 11
What does the tendency of a process to take place depend on?
temperature, entropy change of system and the enthalpy change
7 of 11
When is a reaction spontaneous?
G < O/ -G means energy left over
8 of 11
What is the equation to find dG?
= dH - TdS
9 of 11
some reactions are still not feasible when G < 0, why is this?
so slow that reaction effectively does not happen/ activation energy too high
10 of 11
How does entropy change when a solid lattice dissolves?
increases due to more disorder/ exothermic solution, makes G negative/ endothermic depends on -TAS so temp has impact
11 of 11

Other cards in this set

Card 2

Front

what are the units of entropy?

Back

J/K/mol

Card 3

Front

Define the standard entropy change of reaction

Back

Preview of the front of card 3

Card 4

Front

What is a spontaneous reaction?

Back

Preview of the front of card 4

Card 5

Front

How can an endothermic reaction be spontaneous?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all Entropy resources »