OnlineCBT
Chemistry · THERMODYNAMICS
हिन्दीFor the combustion reaction \( \text{C}(\text{graphite}) + \text{O}_2(g) \rightarrow \text{CO}_2(g) \) at 298 K, which of the following expressions correctly relates the enthalpy of reaction (\( \Delta H \)) and the internal energy change (\( \Delta U \))?
Correct answer · Option 1
ΔH = ΔU
Explanation
\( \Delta n_g = n_g(\text{products}) - n_g(\text{reactants}) = 1 - 1 = 0 \). Therefore, \( \Delta H = \Delta U + \Delta n_g RT = \Delta U \).
