20．某温度时，2NO(g)＋O2(g)＝2NO2(g)反应到2 s后，NO的浓度减少了0.06 mol·L -1，则以O 2 表示该时段
的化学反应速率是
反应速率的表示与计算 · 历年高考化学真题与解析
本页汇总 高考真题检索 的「反应速率的表示与计算」高考化学真题共 1 道，覆盖 2015 年，最常出题型为 单选题；含完整答案与解析。
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