Entropy

Question 1

What is Gibbs free energy?

Answer 1

change in free energy

Question 2

What does Gibbs free energy tell us?

Answer 2

If a reaction will be feasible or not

Question 3

What does a negative Gibbs value tell us?

Answer 3

Reaction is feasible

Question 4

What is feasibility?

Answer 4

Likelihood a reaction occurs

Question 5

What does a positive Gibbs value tell us?

Answer 5

Reaction is not feasible

Question 6

What is the equation to determine Gibbs value?

Answer 6

^H - (Tx^S)

Question 7

How do we calculate ^S?

Answer 7

Sum of products - sum of reactants

Question 8

Which state has the most disorder?

Answer 8

Gas state

Question 9

What is entropy?

Answer 9

Measure of disorder

Question 10

What is a system?

Answer 10

Region of space containing matter and energy that is involved in a reaction or process

Question 11

When is entropy 0?

Answer 11

At -273C or 0K

Question 12

Why is entropy zero at 0K?

Answer 12

Because particles are in their maximum state of order

Question 13

What does a positive entropy value tell us?

Answer 13

There’s more disorder

Question 14

What does a negative entropy value tell us?

Answer 14

There’s less disorder

Question 15

What does a + enthalpy change of solution indicate?

Answer 15

Endothermic