Dear All,
Char (assumed to be pure carbon) gasification, i.e, C + H2O -> CO + H2, is endothermic at 298 K with a heat of reaction (delH) value of 131.28 kJ.
At a temperature of 1273 K, according to my calculation, delH value is higher; it is 153.7 kJ.
I am wondering how this is; shouldn't the endothermicity of a reaction be lower at higher temperature?
Your inputs are greatly appreciated!
Thanks in advance!
Regards,
Kareem
I do not see the problem. It is endothermic. You need to provide heat. To maintain the endothermic reaction at higher temperature, if thermodynamics says you need larger heat to maintain the temperature, it is so. The specific heats of various species will increase with temperature and H20 has higher specific heat and that is why you are getting what you have got.
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