能够说明一个可逆反应H2(g)＋I2(g) 2HI(g)已达到平衡状态的是( )

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能够说明一个可逆反应H₂(g)＋I₂(g)

2HI(g)已达到平衡状态的是( )

A：1 mol H—H键断裂的同时有1 mol H—I键形成

B：1 mol H—H键断裂的同时有2 mol H—I键形成

C：1 mol I—I键断裂的同时有2 mol HI键形成

D：1 mol H—H键断裂的同时有1 mol I—I键形成

上一题下一题 0.0难度选择题更新时间:2019-06-12 12:40:00

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D

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短文改错。

Jim Green teaches our ____ English. He has been in China for more than two year____. He has been to many interesting places in Beijing, and____ he has not yet been to many others ____ parts of China. Last week he goes ____ to Mount Emei in Sichuan Province with his family. Many people like travel ____ by air, but Jim ____ family think that traveling by train is the best. It is much cheap ____ and far more enjoyable than a rushing trip by air. He ____ had a wonderful train ride to Chengdu after ____ they went to Mount Emei by bus.

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