GENCHEM REVIEWER

Front

What happens to a gaseous system at equilibrium when pressure is increased?

Back

The system will shift in the direction that decreases the pressure.

Front

What is favored by an increase in entropy?

Back

An increase in entropy is favored when a liquid evaporates into a gas.

Front

What is chemical equilibrium?

Back

Chemical equilibrium is a state where the concentrations of reactants and products remain constant over time.

Front

What does the second law of thermodynamics imply?

Back

It implies that it is impossible to convert heat entirely into work in a cyclic process.

Front

What type of catalyst is a catalytic converter in vehicles?

Back

A catalytic converter is an example of a heterogeneous catalyst.

Front

Define equilibrium constant.

Back

The equilibrium constant (K) is a number that expresses the relationship between the concentrations of reactants and products at equilibrium.

Front

What is Le Chatelier's principle?

Back

Le Chatelier's principle states that if a system at equilibrium is subjected to a change in concentration, temperature, or pressure, the system will adjust to counteract that change.

Front

What is the significance of entropy in thermodynamics?

Back

Entropy is a measure of the disorder or randomness in a system, and it tends to increase in spontaneous processes.

Front

What is a homogeneous catalyst?

Back

A homogeneous catalyst is a catalyst that is in the same phase as the reactants, typically in a solution.

Front

What is a heterogeneous catalyst?

Back

A heterogeneous catalyst is a catalyst that is in a different phase than the reactants, often solid catalysts in liquid or gas reactions.