O - Entropy

Question 1

definition of entropy:

Answer 1

the measure of disorder in a system

∆Hs

Question 2

do systems move to high or low entropy naturally?

Answer 2

high entropy
eg diffusion

Question 3

what does a positive ∆s indicate?

Answer 3

the products are more disordered then reactants

Question 4

what does a negative ∆s indicate?

Answer 4

the products are less disordered then reactants

Question 5

how can entropy change be calculated?

Answer 5

by adding the entropy of reactants and taking it away from the entropy of products

Question 6

how do you calculate the entropy change of a system?

Answer 6

∆s = ∆sysS + ∆surrS

for reaction to be feasable ∆S must be positive

Question 7

how do you calculate the entropy change of surroundings?

Answer 7

∆H
∆surrS = - ——
T