Question

sketch two energy diagrams. energy diagram a should be endothermic. energy diagram b should be exothermic. add an enzyme to energy diagram b. on each of these diagrams, make sure to label the axes, reactants, products, activation energy, and enzyme (on b only).

Explanation:

• Diagram A (Endothermic):
• Axes: x-axis = Reaction Progress, y-axis = Energy.
• Reactants (lower energy) → Activation Energy (peak) → Products (higher energy, ΔH positive).
• Diagram B (Exothermic + Enzyme):
• Axes: x-axis = Reaction Progress, y-axis = Energy.
• Reactants (higher energy) → Lower Activation Energy (peak, due to enzyme) → Products (lower energy, ΔH negative). Label enzyme near the activation energy peak.

Answer:

Diagram A (endothermic) labels: x-axis (Reaction Progress), y-axis (Energy), reactants (low E), activation energy (peak), products (high E).
Diagram B (exothermic + enzyme) labels: x-axis (Reaction Progress), y-axis (Energy), reactants (high E), lower activation energy (peak), products (low E), enzyme (near peak).

(Note: Diagrams are visual; the above describes their structure and labels.)