Consider the conversion of C to D via a one-step reaction. The activation energy of this reaction is 3 kcal/mol. The energy difference between D and the transition state of the reaction is 7 kcal/mol. What is the ΔH° for the reaction.

For each of the following reactions, identify whether the reactants or the products would have more potential energy. + C(s) + 2H₂O(g) + 90.1 kJ → 2CO2(g) + 2H₂(9) CO(g) + H₂O(g) - 2CO₂(g) + 2H₂(g) + 41.2 kJ C₂H₂OH(I) + 30₂(9) - 2C0₂(g) + 3H₂O(g) C3H8(9) + 6H₂O(g) → 3CO₂(g) + 10H₂(g) Use the following to answer the next 3 questions. The smelting of iron occurs in a blast furnace, as represented by the following overall equation. Step I 3Fe2O3(s) + CO(g) - CO₂(g) + 2Fe3O4(s) A+H° = -47.2 kJ Step II Fe₂O4(s) + CO(g) - CO₂(g) + 3FeO(s) A,H+19.4 kJ Step III FeO(s) + CO(g) - CO₂(g) + Fe(s) AH = -11.0 kJ The molar enthalpy of reaction for Fe₂O3(s) in the reaction represented by Step I is Record your 3-digit answer. Include sign; do not include units. Potential Energy (kJ) AH-514.1 kJ Reactants ACH° +374.1 kJ Which steps in the above process can be represented by the following potential energy diagram? Select one: O Step II only O Steps I and III O Steps I, II and III O None of the above…

22. The rate of a reaction depends on many factors such as the concentration of the reactants. Which of the following explains why an increase in the concentration of reactants affects the rate of reaction? The reactants move faster. The collisions increase between the reactants. There are fewer molecules present. The activation energy is lowered.

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