Chemistry Essentials: Free Energy and Equilibrium

What does Delta G represent in a chemical reaction?

• The speed of the reaction

• The amount of free energy available

• The temperature of the reaction

• The concentration of reactants

What happens to Delta G when K is equal to 1?

• Delta G is positive

• Delta G is undefined

• Delta G is negative

• Delta G is zero

Which type of reaction is characterized by a negative Delta G?

• Endothermic

• Exothermic

• Non-spontaneous

• Equilibrium

In biological systems, why is it important to consider exergonic and endergonic reactions?

• They involve the transfer of heat

• They determine the color of the reaction

• They determine the pH of the reaction

• They involve the transfer of energy

What does a positive Delta G indicate about a reaction's spontaneity?

• The reaction is non-spontaneous

• The reaction is spontaneous

• The reaction is exothermic

• The reaction is at equilibrium

How does a small K value affect the direction of a reaction?

• Remains at equilibrium

• Increases temperature

• Shifts towards reactants

• Shifts towards products

What is the role of enzymes in cellular respiration?

• They increase the temperature

• They decrease the energy required

• They speed up the reaction

• They change the color of the reaction

What is the significance of ATP in cells?

• It provides structural support

• It serves as cellular energy currency

• It acts as a catalyst

• It stores genetic information

How are exergonic and endergonic reactions coupled in cells?

• By changing pH

• Through enzymes

• By using heat

• By transferring energy

What does a negative Delta G value indicate about the K value?

• K is less than 1

• K is equal to 1

• K is undefined

• K is greater than 1