Dianfeng Chemical
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LeadNitrateAndSodiumSulfideNetIonicEquation
On the net ionic equation of lead nitrate and sodium sulfide
Lead nitrate ($Pb (NO_ {3}) _ {2} $) meets sodium sulfide ($Na_ {2} S $), and the chemical reaction is a recombination of ions.
In solution, lead nitrate dissociates into lead ion ($Pb ^ {2 +} $) and nitrate ion ($NO_ {3 }^{-}$）， sodium sulfide dissociates into sodium ion ($Na ^{ + }$） and sulfur ion ($S ^ {2 - }$）。
When the two are mixed, lead ions and sulfur ions quickly combine to form a lead sulfide ($PbS $) precipitate. This precipitate is insoluble in water and precipitates from the solution. Sodium ions and nitrate ions remain in the solution and do not participate in the actual chemical reaction, which is called bystander ions.
Its net ion equation is: $Pb ^ {2 +} + S ^ {2 - } = PbS? $. This formula accurately presents the essence of the chemical reaction, that is, only the changing ions are involved, ignoring the ions that do not participate in the reaction, so that the reaction core is clear at a glance. By clarifying the net ion equation, it is helpful to understand the law and essence of ionic reactions in solution, which is of great help to understand the mechanism of chemical changes.
Lead nitrate ($Pb (NO_ {3}) _ {2} $) meets sodium sulfide ($Na_ {2} S $), and the chemical reaction is a recombination of ions.
In solution, lead nitrate dissociates into lead ion ($Pb ^ {2 +} $) and nitrate ion ($NO_ {3 }^{-}$）， sodium sulfide dissociates into sodium ion ($Na ^{ + }$） and sulfur ion ($S ^ {2 - }$）。
When the two are mixed, lead ions and sulfur ions quickly combine to form a lead sulfide ($PbS $) precipitate. This precipitate is insoluble in water and precipitates from the solution. Sodium ions and nitrate ions remain in the solution and do not participate in the actual chemical reaction, which is called bystander ions.
Its net ion equation is: $Pb ^ {2 +} + S ^ {2 - } = PbS? $. This formula accurately presents the essence of the chemical reaction, that is, only the changing ions are involved, ignoring the ions that do not participate in the reaction, so that the reaction core is clear at a glance. By clarifying the net ion equation, it is helpful to understand the law and essence of ionic reactions in solution, which is of great help to understand the mechanism of chemical changes.
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