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11.在 25oC 下,把 1.00M Ba(NO3)2與 1.00M Na2SO4之溶液混合後,倒入定壓卡計測量,有白色的沈澱 BaSO4產生,溶液的溫度上升至 28.1oC。假設卡計並沒有吸收任何
問題詳情
11.在 25oC 下,把 1.00M Ba(NO3)2與 1.00M Na2SO4之溶液混合後,倒入定壓卡計測量,有白色的沈澱 BaSO4產生,溶液的溫度上升至 28.1oC。假設卡計並沒有吸收任何反應所產生的熱量,並且知此溶液的重量為 2kg,試計算此反應的焓變化是多少?(溶液的比熱是 4.18 J/K-g)
(A) +2.6x104J
(B) -2.6x104J
(C) +6.1x103J
(D) -6.1x103J
參考答案
答案:B
難度:
計算中
-1
書單:
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