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【简答题】
若基元反应A→2B的活化能为Ea，而2B→A的活化能为Ea。问： (1)加催化剂后，Ea和Ea各有何变化?△H有何变化? (2)加不同的催化剂对Ea的影响是否相同? (3)提高反应温度，Ea和Ea各有何变化? (4)改变起始浓度后，Ea有何变化?
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举一反三
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【简答题】Shelly has got lost on the campus. She is asking Martin for directions. Listen to the conversation between them and decide whether the following statements are true (T) or false (F).
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