CH-334

Energy profile diagrams

Chemistry · Secondary 3 · Hard · Energy profile diagrams

For a reaction, the reactants have an energy of 120 kJ and the products have an energy of 70 kJ. Which statement about its energy profile diagram is correct?

The products line is lower than the reactants line and $\Delta H$ is negative.
The products line is higher than the reactants line and $\Delta H$ is negative.
The products line is higher than the reactants line and $\Delta H$ is positive.
The products line is at the same level as the reactants line and $\Delta H = 0$ .

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