---
title: "The potential energy profile for the reaction represented below is shown in the diagram. The reaction was conducted under two different conditions: uncatalyzed (solid curve) and catalyzed (dashed curve).  \\[ 2\\text{H}_2\\text{O}_2\\text{(aq)} \\rightarrow 2\\text{H}_2\\text{O(l)} + \\text{O}_2\\text{(g)} \\]  Based on the diagram, which of the following correctly compares the activation energy, \\(E_a\\), and the enthalpy change, \\(\\Delta H\\), of the catalyzed pathway to those of the uncatalyzed pathway?"
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url: "https://nerd-notes.com/ubq/119864/"
date_modified: "2026-08-21T08:16:30+00:00"
---

# The potential energy profile for the reaction represented below is shown in the diagram. The reaction was conducted under two different conditions: uncatalyzed (solid curve) and catalyzed (dashed curve).

\[ 2\text{H}_2\text{O}_2\text{(aq)} \rightarrow 2\text{H}_2\text{O(l)} + \text{O}_2\text{(g)} \]

Based on the diagram, which of the following correctly compares the activation energy, \(E_a\), and the enthalpy change, \(\Delta H\), of the catalyzed pathway to those of the uncatalyzed pathway?

The potential energy profile for the reaction represented below is shown in the diagram. The reaction was conducted under two different conditions: uncatalyzed (solid curve) and catalyzed (dashed curve).

\[ 2\text{H}_2\text{O}_2\text{(aq)} \rightarrow 2\text{H}_2\text{O(l)} + \text{O}_2\text{(g)} \]

Based on the diagram, which of the following correctly compares the activation energy, \(E_a\), and the enthalpy change, \(\Delta H\), of the catalyzed pathway to those of the uncatalyzed pathway?

![A 2D line graph with bare axes and no gridlines. The vertical axis is labeled Potential Energy and the horizontal axis is labeled Reaction Progress. On the left, a flat horizontal reactant plateau is labeled 2H2O2(aq) at an intermediate energy level. On the right, a flat horizontal product plateau is labeled 2H2O(l) + O2(g) at a lower energy level. Two curves connect the reactant plateau to the product plateau. The first curve is a solid line that rises from the reactant plateau to a high single peak near the top of the plot before descending to the product plateau. The second curve is a dashed line that starts at the exact same reactant plateau, rises to a single lower peak positioned noticeably below the solid peak, and descends to the exact same product plateau. A legend in the upper right corner shows a solid line labeled Uncatalyzed pathway and a dashed line labeled Catalyzed pathway. No other curves, gridlines, labels, text, or annotations appear.](https://nerd-notes.com/wp-content/uploads/ubq-frq-generated/stem-fig-1-1787300190-JmCIN8.jpg)

- **A.** The catalyzed pathway has a greater \(E_a\) and a more negative \(\Delta H\).
- **B.** The catalyzed pathway has the same \(E_a\) and a more negative \(\Delta H\).
- **C.** The catalyzed pathway has a lower \(E_a\) and a more negative \(\Delta H\).
- **D.** The catalyzed pathway has a lower \(E_a\) and the same \(\Delta H\).

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/119864/*