酒精c2h5oh燃烧化学方程式
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酒精c2h5oh燃烧化学方程式英文回答:
The combustion of ethanol (C2H5OH) can be represented by the chemical equation:
C2H5OH + 3O2 → 2CO2 + 3H2O.
In this reaction, ethanol reacts with oxygen gas to produce carbon dioxide and water. The balanced equation shows that for every molecule of ethanol that is burned, two molecules of carbon dioxide and three molecules of water are formed.
The combustion of ethanol is an exothermic reaction, meaning that it releases heat energy. This is why ethanol is commonly used as a fuel in engines and as a source of heat in fireplaces and stoves.
The reaction can be explained in terms of the breaking
and formation of chemical bonds. Ethanol contains carbon-carbon, carbon-hydrogen, and oxygen-hydrogen bonds. During combustion, these bonds are broken and new bonds are formed. The carbon-carbon and carbon-hydrogen bonds in ethanol are broken, and new carbon-oxygen and oxygen-hydrogen bonds are formed in the products, carbon dioxide and water.
For example, let's imagine we have a bottle of ethanol and we want to burn it. We pour the ethanol into a
container and light it with a match. As the flame comes
into contact with the ethanol, it begins to burn. The heat from the flame breaks the carbon-carbon and carbon-hydrogen bonds in ethanol, releasing carbon dioxide and water vapor. We can see the flame and feel the heat energy being released. This is an example of the combustion of ethanol.
中文回答:
酒精(C2H5OH)的燃烧可以用化学方程式表示为:
C2H5OH + 3O2 → 2CO2 + 3H2O.
在这个反应中,酒精与氧气反应生成二氧化碳和水。
平衡的化学方程式表明,每燃烧一个酒精分子,就会生成两个二氧化碳分子和三个水分子。
酒精的燃烧是一个放热反应,意味着它释放热能。
这就是为什么酒精常被用作发动机的燃料,以及火炉和炉灶的热源。
这个反应可以通过化学键的断裂和形成来解释。
酒精中含有碳-碳、碳-氢和氧-氢键。
在燃烧过程中,这些键被断裂,新的键被形成。
酒精中的碳-碳和碳-氢键被断裂,而在生成物中形成了新的碳-氧和氧-氢键,即二氧化碳和水。
举个例子,我们想象一下我们有一个瓶子里装着酒精,我们想要将其燃烧。
我们将酒精倒入一个容器中,用火柴点燃它。
当火焰接触到酒精时,酒精开始燃烧。
火焰的热量会断裂酒精中的碳-碳和碳-氢键,释放出二氧化碳和水蒸气。
我们可以看到火焰,并感受到释放的热能。
这就是酒精燃烧的一个例子。