Thermochemistry

Front

What does a positive entropy indicate about a system?

Back

The system is in a state of disorder.

Front

What type of reaction is characterized by a release of heat?

Back

Exothermic reaction.

Front

What is the value of Gibbs Free Energy when a reaction is at equilibrium?

Back

Zero.

Front

What does a decrease in entropy suggest about a reaction's spontaneity?

Back

It is nonspontaneous.

Front

In thermochemistry, what is the significance of reversing an equation?

Back

Reversing an equation changes the sign of the enthalpy change.

Front

Define enthalpy in the context of thermochemistry.

Back

Enthalpy is the total heat content of a system, often represented as H.

Front

What is the first law of thermodynamics?

Back

Energy cannot be created or destroyed, only transformed.

Front

How does temperature affect the entropy of a system?

Back

Generally, as temperature increases, entropy increases.

Front

What is the relationship between enthalpy and exothermic reactions?

Back

In exothermic reactions, the enthalpy change (ΔH) is negative.

Front

What is the role of Gibbs Free Energy in predicting reaction spontaneity?

Back

A negative Gibbs Free Energy change indicates a spontaneous reaction.