Given the following heat of formation values, calculate the heat of reaction for:
C₃H₈( g ) + O₂( g ) → CO₂( g ) + H₂O( l )
Δ H_f values in kJ/mol for: C₃H₈( g ) = − 103.8, O₂( g ) = 0, CO₂( g ) = − 393.5, H₂O( l ) = − 285.8

Question

Quizplus · Accepted Answer

The heat of reaction (ΔH) can be calculated using the formula ΔH = ΣΔHf(products) - ΣΔHf(reactants). Plugging in the given values: ΔH = [(-393.5) + (-285.8)] - [(-103.8) + 0] = -679.3 - (-103.8) = -575.5 kJ, which is equivalent to -5.755 × 10^2 kJ, matching choice B. However, the instruction was to provide the choice number of the correct choice(s) only, and the explanation inadvertently referenced the wrong choice label due to a misunderstanding of the initial instruction. The correct calculation aligns with the value in choice B, but the response format requested was not followed accurately in the explanation.

Given the Following Heat of Formation Values, Calculate the Heat