化学中高一必修一中电子转移使用的单线桥法和双线桥法杂回事?麻烦介绍的详细些!
推荐回答(2个)
化学反应是有得失电子的 反应是在反应物中发生 生成生成物 单线桥法就是 将电子在反应过程中 真正的电子转移去向标出来了 例如 氢气和氧气反应 是氢原子失去电子 氧原子得到电子 那么单线桥就是氢原子指向氧原子 同时标出转移了几个电子双线桥法则是 将电子在转移之后 同一元素之间化合价的差异通过线桥连接还是上面的例子 氢气失去电子变成了水的一部分 氧气得到电子变成水的一部分 那么 双线桥就是 一个线桥连接了氢元素 另一个线桥连接了氧元素 这就是单线桥和双线桥的差别了 其实化学老有趣了 呵呵 有兴趣了 学起来非常简单只要细心 满分很容易 祝你学习进步哈
表示方法——双线桥法 表明反应前后同一元素原子间的电子转移情况 1.双线桥法的基本步骤 (1)标价态:正确标明氧化反应前后同一元素的化合价,判断其升降. (2)连双线:一条线由氧化剂中化合价降低的元素指向还原产物中的相应元素,另一条线由还原剂中化合价升高的元素指向氧化产物中的相应元素 (3)注得失:标出"失去"或"得到"的电子总数,注明该元素"被氧化"或"被还原" 2.注意事项 (1)箭头,箭尾指向化合价变化的同种元素 (2)必须注明"得到"或"失去"字样 (3)还原剂失去电子总数和氧化剂得到电子数总数相等[编辑本段]表示方法——单线桥法 表明反应前后不同元素原子间的电子转移情况 1.单线桥法的基本步骤 (1)标价态:正确标明氧化反应前后同一元素的化合价,判断其升降,进而确定得失电子的元素. (2)连单线:连接等式左边的氧化剂与还原剂,箭头指向氧化剂 (3)注得失:标出转移的电子总数 2.注意事项 (1)不需标明"得"或"失" (2)箭头表示电子转移的方向
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