Question

Given the values of ΔrH∘, ΔrS∘, and T below, determine ΔSuniv.

Part A:

ΔrH∘= 130 kJmol−1 , ΔrS∘=− 263 JK−1mol−1 , T= 291 K .

Part B

ΔrH∘=− 130 kJmol−1 , ΔrS∘= 263 JK−1mol−1 , T= 291 K .

Part C

ΔrH∘=− 130 kJmol−1 , ΔrS∘=− 263 JK−1mol−1 , T= 291 K .

Part D

ΔrH∘=− 130 kJmol−1 , ΔrS∘=− 263 JK−1mol−1 , T= 561 K .

Answer 1

Part A :

  This is for a non spontaneous reaction.

Part B :

This is for a spontaneous reaction.

Part C :

This is for a spontaneous reaction.

Part D :

This is for a non spontaneous reaction.