Change in Enthalpy for an Exothermic Reaction

Medium General Chemistry Thermodynamics And Thermochemistry

Consider a hypothetical reaction where 1 mole of gas A reacts with 2 moles of gas B to produce 3 moles of gas C. The process is carried out in a sealed container at constant temperature and pressure. If the reaction releases 200 kJ of energy, what is the change in enthalpy (ΔH) for the reaction?

Which of the following statements accurately describes the relationship between the amount of energy released and the change in enthalpy of the reaction?

ΔH = -200 kJ, indicating an exothermic reaction.

ΔH = +200 kJ, indicating an endothermic reaction.

ΔH = 0 kJ, indicating no change in energy.

ΔH = +100 kJ, indicating partial absorption of energy.

Hint

Submitted8.3K

Correct7.2K

% Correct87%