Answer to Question #109052 in General Chemistry for kim

Question

3) Calculate the change in entropy that occurs in the system when 45.3 g of acetone (C3H6O) freezes at its melting point (-94.8∘C). ΔH∘fus = 5.69 kJ/mol.

4) Calculate ΔSsurr at the indicated temperature for a reaction.
part a ΔH∘rxn= -283 kJ ; 298 K
part b ΔH∘rxn= -283 kJ ; 72 K
part c ΔH∘rxn= 137 kJ ; 298 K
part d ΔH∘rxn= 137 kJ ; 72 K

Answer 1

-0.0249 KJ/K

a. 0.9497 KJ/K

b. 3.93 KJ/K

c. -0.4597 KJ/K

d. 1.9028 KJ/K