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AP Chemistry
5.10 Multistep Reaction Energy Profile
5.6 Reaction Energy Profile
AdvancedMCQGraphicalMathematicalConceptual15.7k
Measured potential-energy profile for the reversible \(\text{X(g)} \rightleftharpoons \text{Y(g)}\) pathway.
Measured potential-energy profile for the reversible \(\text{X(g)} \rightleftharpoons \text{Y(g)}\) pathway.
A student studies the reversible gas-phase isomerization

\[ \text{X(g)} \rightleftharpoons \text{Y(g)} \]

The proposed pathway contains \(2\) elementary steps, and measured activation-energy differences are shown in the potential-energy profile. Based on the graph, which value and reasoning correctly give \(\Delta H_{\text{forward}}\)?

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