Shanxian Chemical
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Ammonia Dissolving in Water Mechanism
The mechanism of ammonia dissolving in water
Ammonia is also a genus of gas, and it can dissolve in water. The mechanism is quite comprehensible.
Ammonia molecules have the sign of polarity. Its nitrogen atom is quite electronegative. When it bonds with hydrogen atoms, the electron cloud is biased towards nitrogen, causing uneven charge distribution in the molecule, the nitrogen terminal is negatively charged, and the hydrogen terminal is positively charged.
Water is also a polar molecule. The oxygen atom is highly electronegative, and the oxygen terminal in the water molecule is negatively charged, and the hydrogen terminal is positively charged. When ammonia enters water, the ammonia molecule and the water molecule are introduced due to polarity. The nitrogen atom of the ammonia molecule can be hydrogen-bonded with the hydrogen atom of the water molecule; the hydrogen atom of the ammonia molecule can also form a hydrogen bond with the oxygen atom of the water molecule. The force of this hydrogen bond makes the ammonia molecule interact with the water molecule and gradually enter the water, causing the ammonia to dissolve in the water.
And after the ammonia is dissolved in water, some ammonia molecules react with the water molecule. The nitrogen atom of ammonia, with lone pair electrons, can attract the hydrogen nucleus of water molecules, and the following reaction occurs:\ (NH_ {3} + H_ {2} O\ rightleftharpoons NH_ {3}\ cdot H_ {2} O\),\ (NH_ {3}\ cdot H_ {2} O\) can be partially ionized:\ (NH_ {3}\ cdot H_ {2} O\ rightleftharpoons NH_ {4} ^ {+} + OH ^{-}\) ， This is also the reason why the solution is alkaline after ammonia is dissolved in water.
In summary, ammonia forms hydrogen bonds with water molecules due to molecular polarity, and partially reacts with water, so it is soluble in water, which is the mechanism of ammonia dissolving in water.
Ammonia is also a genus of gas, and it can dissolve in water. The mechanism is quite comprehensible.
Ammonia molecules have the sign of polarity. Its nitrogen atom is quite electronegative. When it bonds with hydrogen atoms, the electron cloud is biased towards nitrogen, causing uneven charge distribution in the molecule, the nitrogen terminal is negatively charged, and the hydrogen terminal is positively charged.
Water is also a polar molecule. The oxygen atom is highly electronegative, and the oxygen terminal in the water molecule is negatively charged, and the hydrogen terminal is positively charged. When ammonia enters water, the ammonia molecule and the water molecule are introduced due to polarity. The nitrogen atom of the ammonia molecule can be hydrogen-bonded with the hydrogen atom of the water molecule; the hydrogen atom of the ammonia molecule can also form a hydrogen bond with the oxygen atom of the water molecule. The force of this hydrogen bond makes the ammonia molecule interact with the water molecule and gradually enter the water, causing the ammonia to dissolve in the water.
And after the ammonia is dissolved in water, some ammonia molecules react with the water molecule. The nitrogen atom of ammonia, with lone pair electrons, can attract the hydrogen nucleus of water molecules, and the following reaction occurs:\ (NH_ {3} + H_ {2} O\ rightleftharpoons NH_ {3}\ cdot H_ {2} O\),\ (NH_ {3}\ cdot H_ {2} O\) can be partially ionized:\ (NH_ {3}\ cdot H_ {2} O\ rightleftharpoons NH_ {4} ^ {+} + OH ^{-}\) ， This is also the reason why the solution is alkaline after ammonia is dissolved in water.
In summary, ammonia forms hydrogen bonds with water molecules due to molecular polarity, and partially reacts with water, so it is soluble in water, which is the mechanism of ammonia dissolving in water.
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