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【判断题】
由极性键结合的分子不一定是极性分子。
A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
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【单选题】反应C4H10 → 2C2H4+H2,k=2.0 /s,则反应级数n=( )
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【简答题】在常压和898K下进行乙苯催化脱氢反应 (1)C 6 H 5 C 2 H 5 C 6 H 5 —CH===CH 2 +H 2 (2)C 6 H 5 C 2 H 5 →C 6 H 6 +C 2 H 4 (3)C 6 H 5 C 2 H 5 +H 2 →C 6 H 5 CH 3 +CH 4 为了简便起见，以A，B，T，H及S分别代表乙苯、苯、甲苯、氢及苯乙烯，在反应温度及压力下，上列各式反应的速率方程...
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