Thermodynamics

Question 1

Open System

Answer 1

Can exchange both energy and matter with surroundings

Question 2

Closed System

Answer 2

Can exchange energy with surroundings

Question 3

Isolated System

Answer 3

Can exchange nothing with surroundings

Question 4

1st Law of Thermodynamics

Answer 4

Internal energy of an isolated system is constant

Question 5

1st Law of Thermodynamics Equation and what is it measured in?

Answer 5

ΔU = w + q (???)

Question 6

2nd Law of Thermodynamics

Answer 6

The Entropy, (S), of an isolated system increases for any spontaneous change

Question 7

2nd Law of Thermodynamics Equation and what is it measured in?

Answer 7

ΔG = ΔH - TΔS (kJ mol-1)

Question 8

3rd Law of Thermodynamics

Answer 8

The Entropy, (S), of a perfect catalyst at absolute zero of the temperature scale is zero

Question 9

3rd Law of Thermodynamics Equation and what is it measured in?

Answer 9

ΔS = Sum of S Products - Sum of S Reactants (???)

Question 10

Equilibrium Constant equation

Answer 10

ΔG = -RTln(K)