Gibbs Free Energy and Reactions

The video introduces Gibbs Free Energy, explaining its dependence on enthalpy, entropy, and temperature. It discusses spontaneous reactions, providing examples like a ball rolling down a slide and salt dissolving in water. The video differentiates between exergonic and endergonic reactions, using diagrams to illustrate energy changes. It concludes with a teaser for the next video on the cell cycle.

What is the main topic discussed in this video?

• Gibbs Free Energy

• Thermodynamic laws

• Cell cycle

• Chemical bonding

Which of the following is NOT a factor affecting Gibbs Free Energy?

• Enthalpy

• Pressure

• Temperature

• Entropy

In a spontaneous reaction, what happens to the enthalpy?

• It becomes zero

• It increases

• It remains constant

• It decreases

What happens to entropy when salt dissolves in water?

• Entropy decreases

• Entropy increases

• Entropy remains constant

• Entropy becomes zero

Which of the following is true for a reaction with Gibbs Free Energy below zero?

• The reaction is at equilibrium

• The reaction is non-spontaneous

• The reaction is exergonic

• The reaction is endergonic

What is the Gibbs Free Energy condition for a reaction at equilibrium?

• Greater than zero

• Less than zero

• Equal to zero

• Undefined

In an exergonic reaction, what happens to the energy?

• Energy is released

• Energy remains constant

• Energy is destroyed

• Energy is absorbed

What is the role of activation energy in an exergonic reaction?

• It decreases potential energy

• It increases potential energy

• It initiates the reaction

• It stops the reaction

In an endergonic reaction, what happens to potential energy?

• It decreases

• It remains constant

• It becomes zero

• It increases

What is the main difference between exergonic and endergonic reactions?

• Exergonic reactions absorb energy

• Endergonic reactions release energy

• Exergonic reactions release energy

• Endergonic reactions do not involve energy change