Question

Consider the energy diagram, find ΔE reverse.Answer in units of kJ/mol.

Answer 1

`\text{ }\Delta E_(REVERSE)\text{ = 31 KJ/mol}`

Step-by-step explanation

Given information

The energy on the product side = -40 KJ

The energy on the reactant side = -9kJ

Assume the reaction is a reversible reaction

`\text{ A }\rightleftarrows\text{ B}`

For a reverse reaction, the product becomes the reactant and the reactant is the new product formed

Step 1: Write the general formula for calculating a change in energy

`\text{ }\Delta E_(reverse)\text{ = }\Delta E_(PRODUCT)-\text{ }\Delta E_(REACTANT)`

Step 2: Substitute the given data into the formula in step 1

`\begin{gathered} \Delta E_(reverse)\text{ = -9 - \lparen-40\rparen} \\ \Delta E_{REVERSE\text{ }}\text{ = -9 + 40} \\ \text{ }\Delta E_{reverse\text{ }}\text{ = 31 KJ/mol} \end{gathered}`