作者jeffteng (Christian&Oliver )
看板ChemEng
标题[问题] 有关弹卡计的计算
时间Wed Nov 14 21:31:05 2012
想请问各位大大 下面这题弹卡计的计算
If 1 lg mole of Cu and 1 lg mole of H2SO4 (l00 %) react together
completely in a bomb calorimeter. How many Btu are absorbed (or evolved)?
Assume that the products are H2(g) and solid CuSO4. The initial and final
temperature in the bomb are 25°C (△Hf CuSO4(S) = -769.86kJ/g-mol ,
△Hf H2SO4(l) = -811.32kJ/g-mol , Gas constant R = 8.314J/g-mol-K)
这个反应理论上△H = -769.86-(-811.32) = 41.46 会吸热 41.46 kJ
但系统的温度是恒温 这要怎麽解释 题目给Gas Conatant是跟H2有关吗
谢谢回答喔
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