Volume of HCI (mL) Volume of NaOH (mL) Temperature of HCI (°C) Temperature of mixture after reaction (°C) Temperature difference (°C) Number of joules evolved (J) (enter a positive value) Moles of H* that were neutralized (mol) Joules evolved per mole of H* (J/mol) Trial 1 50.0 50.0 27.4 31.8 4.4 Trial 2 50.0 50.0 27.4 31.8 4.4

Answer and Explain

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…

1. For the reaction: 2NH3(g) + CO2(g) (NH2)2CO(s) + H2O(g) AH = - 330 kJ Predict how each of the following changes would impact a reaction that is currently at equilibrium. That is, which way would the reaction progress in order to respond to the change in the system to regain equilibrium (use arrows to show the direction of change that would occur to return back to equilibrium). Explain your reasoning for each part.