碳酸鈣加鹽酸的反應是放熱但摸起來卻是冰的?
如主旨
CaCO3(s) + 2HCl(g)--> CaCl2(s) + H2O(l) + CO2(g) 反應熱 = -90. kJ
但是做實驗時,摸過濾瓶很明顯是冰冰的...
那不就應該是吸熱反應嗎?
請先進解惑,謝謝!
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