铜与硝酸铝反应现象
    英文回答：
    When copper reacts with aluminum nitrate, a few interesting phenomena can be observed. Firstly, a redox reaction takes place between copper and nitric acid, which is the main component of aluminum nitrate. The copper atoms lose electrons and are oxidized to copper ions, while the nitric acid gains electrons and is reduced to nitric oxide gas. This reaction can be represented by the following equation:
    Cu + 4HNO3 -> Cu(NO3)2 + 2NO2 + 2H2O.
    In this reaction, the copper atoms are being "eaten away" by the nitric acid, resulting in the dissolution of copper ions into the solution. This can be seen as the blue color of the copper nitrate solution formed.
    However, the reaction does not stop there. Aluminum, which is present in aluminum nitrate, can also react with the copper ions in the solution. This is a displacement reaction, w
here the more reactive aluminum replaces the less reactive copper in the copper nitrate solution. The equation for this reaction is as follows:
    2Al + 3Cu(NO3)2 -> 2Al(NO3)3 + 3Cu.
    As a result of this reaction, solid copper is formed, which can be observed as a red-brown precipitate settling at the bottom of the solution. At the same time, aluminum ions are released into the solution.
    This reaction between copper and aluminum nitrate is often used as a demonstration of the reactivity series of metals. Copper, being less reactive than aluminum, is displaced by aluminum in the solution. This shows that aluminum is more reactive than copper. It is a common saying in English to describe such a situation as "the stronger one wins" or "the bigger fish eats the smaller fish."
    中文回答：
    当铜与硝酸铝反应时，会观察到一些有趣的现象。首先，铜与硝酸发生氧化还原反应，硝
酸是硝酸铝的主要组成部分。铜原子失去电子被氧化成铜离子，而硝酸接受电子被还原成二氧化氮气体。这个反应可以用以下方程式表示：
    Cu + 4HNO3 -> Cu(NO3)2 + 2NO2 + 2H2O.
    在这个反应中，铜原子被硝酸“腐蚀”，导致铜离子溶解到溶液中。这可以通过形成的铜硝酸溶液的蓝来观察到。
    然而，反应并不止于此。硝酸铝中含有铝，铝离子也可以与溶液中的铜离子发生反应。这是一种置换反应，其中更活泼的铝取代了较不活泼的铜在铜硝酸溶液中的位置。这个反应的方程式如下：
    2Al + 3Cu(NO3)2 -> 2Al(NO3)3 + 3Cu.
    由于这个反应，固体的铜被生成，可以观察到沉淀在溶液底部的红褐物质。与此同时，铝离子释放到溶液中。
    铜与硝酸铝的反应常被用作展示金属活泼性系列的实验。铜比铝不活泼，所以铝能取代溶
液中的铜。这表明铝比铜更活泼。在英语中，常用“强者胜出”或“大鱼吃小鱼”来形容这种情况。react to中文

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