Determining Spontaneity of a Chemical Reaction

Hard General Chemistry Thermodynamics And Thermochemistry

In an isolated system, a chemical reaction occurs which is characterized by a decrease in enthalpy and an increase in entropy. The system is initially at a temperature of 298 K and experiences a change in heat (ΔH) of -150 kJ/mol and a change in entropy (ΔS) of +0.5 kJ/K·mol. Based on the principles of thermodynamics, which of the following statements best describes the spontaneity of the reaction under these conditions?

The reaction is non-spontaneous at all temperatures.

The reaction is spontaneous at temperatures above 300 K.

The reaction is spontaneous at temperatures below 300 K.

The reaction is spontaneous at all temperatures.

Hint

Submitted7.6K

Correct6.8K

% Correct89%