Free energy

When the entropy of a system increases, what sign (+ or -) is used

+ (positive)

What sign (+ or -) does the change in enthalpy have when the reaction releases heat energy to the surroundings

- (negative)

What is the second law of thermodynamics

A process will be spontaneous when it results in an increase of goal entropy in the universe. Either the system or the surroundings must have an increase in entropy, or both

predict the change in entropy of the surrounding for an endothermic reaction

Because the temperature will go down, the entropy of the surrounding decreases

predict the change in entropy of the surroundings for an exothermic reaction

Because the temperature will go up, the entropy of the surrounding increases

What is the symbol for the change in enthalpy

Change in H

What is the symbol for the change in entropy of a system

Change in S

What does coupled with mean

Exergonic processes are often coupled with endergonic.

Would the change in S term in the Gibbs free energy equation (change in G= change in H- T change in S) be positive or negative

Increase in entropy= positive

Is there a correlation between the change in enthalpy and the change in entropy for a system

No correlation. Some exothermic reactions have + chance in S. some have - change in S. Some endothermic reactions have + change in S. some have - change in S

What is Gibbs free energy

The amount of work that can be done by a spontaneous process

When an exothermic reaction occurs, ant typically happens to the temperature of hate surroundings

The energy released form the exothermic reaction typically increases the temperature of the surroundings

Hat is a spontaneous process

They will occur without any additional work being done on the system.

Is there a correlation between the level of organization in the molecules and a change in entropy

Yes. Increasing entropy yields less organization

What two terms re used to describe the enthalpy changes for the reactions

endothermic and exothermic

Would the change in H term in the Gibbs free energy equation (change in G= change in H- T change in S) be positive or negative

exothermic= negative