How is the reaction heat for the synthesis of methanol from carbon monoxide and hydrogen calculated?
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How is the reaction heat for the synthesis of methanol from carbon monoxide and hydrogen calculated?
The synthesis of methanol from carbon monoxide and hydrogen is an exothermic reaction; at 25°C, the heat of reaction is 90.8 kJ/mol. The relationship between the reaction heat QT (kJ/mol) and temperature is given by: QT = –74893.6 – 64.77T + 47.78×10⁻³T² – 112.926×10⁻³T³, where T is the absolute temperature (K)
May I ask why plugging in 25°C into the formula does not yield 90.8 kJ/mol? Did I make a mistake in the calculation? . .