硝酸盐(nitrate)和亚硝酸盐(nitrite)的区别

硝酸盐和亚硝酸盐都是无机化合物，顾名思义，其中的特征元素是“N”或氮，其原子序数为7。氮在自然界是一种无味的双原子气体，具有活性。元素氮也是高电负性的。硝酸盐和亚硝酸盐是两类重要的含氮化合物。硝酸盐和亚硝酸盐的主要区别在于硝酸盐基团含有一个氮原子和三个氧原子，而亚硝酸盐基团含有一个氮原子和两个氧原子。...

硝酸盐的主要区别(main difference nitrate) vs. 亚硝酸盐(nitrite)

什么是硝酸盐(nitrate)？

硝酸盐是由氮原子和氧原子组成的多原子离子。化学结构包含一个氮原子和三个氧原子，由分子式NO3-表示。硝酸盐基团在无机化学中是一个官能团。化合物具有三角平面几何结构。这告诉我们化合物中的原子是如何在三维空间中排列的。根据硝酸盐的结构，氮是中心，与三个相同的氧原子相连。然而，在任何给定的时间，只有一个氧原子与氮中心成双键，另外两个氧原子通过单键结合。但是，由于这三个氧原子是完全相同的，我们认为它的结构符合化学中的共振原理。因此，双键可以在任何氧原子和氮中心之间迁移。此外，氮在硝酸盐中的氧化数为+5。

Nitrate i*** have an overall charge of -1, however c***idering the charge distribution within the ion, the Nitrogen atom carries a charge of +1, and each Oxygen atom carries a charge of -(2/3), to result in an overall charge of -1. Generally, all nitrate salts are soluble in water. With water, the Nitrate i*** form nitric acid, which is c***idered as a strong acid. Nitrate compounds are used for fertilizers in agriculture, for the production of explosives and gun powder, etc. 硝酸盐(nitrate)和亚硝酸盐(nitrite)的区别

什么是亚硝酸盐(nitrite)？

亚硝酸盐也是一种含有N和O原子的多原子离子，其中氮的氧化数为+3。亚硝酸盐基团含有一个氮原子和两个氧原子，由分子式NO2-表示。O-N-O键角大约在120左右°. 这让我们知道原子是如何在三维空间中排列的。由于亚硝酸盐中氮的氧化数小于硝酸盐的氧化数，亚硝酸盐离子可以被氧化形成硝酸盐。

Upon reacting with water, Nitrites form nitrous acid, which is c***idered to be a weak acid in inorganic chemistry. In the chemical structure of the Nitrite compound, one Oxygen atom is doubly bonded to the Nitrogen centre, and the other is singly bonded. However, as the resonance principle governs the structure relati***hip of the group, the double bond between the Oxygen atom and the Nitrogen atom is c***idered to be c***tantly migrating; hence, the two Oxygen atoms would have identical status. Nitrites are produced by nitrifying bacteria and is often used in the food industry for the curing of meat. It also has an important biochemical role being the vasodilator for nitric oxide. 硝酸盐(nitrate)和亚硝酸盐(nitrite)的区别