Dianfeng Chemical
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LeadII Nitrate Sodium Sulfide Precipitate
Precipitation Reaction of Lead (II) Nitric Acid and Sodium Sulfide
In the past, chemists have studied the change of mixing lead (II) nitric acid (Lead II Nitrate) with sodium sulfide (Sodium Sulfide). Take the lead (II) nitric acid solution, its quality is clear and transparent, and take the sodium sulfide solution again, and it is also clear and free.
When the two sides fall into the vessel, there is a strange change. In the solution, it gradually appears as if it is like a light fog floating, and soon, the color turns dark, and finally forms a precipitation (Precipitate). The precipitator, black and heavy, sinks at the bottom of the vessel.
Investigate the reason why, when the lead (II) nitric acid meets sodium sulfide, the chemical phase is excited, and the lead ion and the sulfur ion are combined, thus forming the precipitation of lead sulfide. The corresponding formula is as follows:
$Pb (NO_3) _2 + Na_2S\ longrightarrow PbS\ downarrow + 2NaNO_3 $
Looking at this experiment, it can be seen that the substances are mixed, the changes are gratuitous, and the chemistry is wonderful and unfathomable. Scholars should be careful about the operation, carefully observe the changes, and use the mystery of chemistry.
In the past, chemists have studied the change of mixing lead (II) nitric acid (Lead II Nitrate) with sodium sulfide (Sodium Sulfide). Take the lead (II) nitric acid solution, its quality is clear and transparent, and take the sodium sulfide solution again, and it is also clear and free.
When the two sides fall into the vessel, there is a strange change. In the solution, it gradually appears as if it is like a light fog floating, and soon, the color turns dark, and finally forms a precipitation (Precipitate). The precipitator, black and heavy, sinks at the bottom of the vessel.
Investigate the reason why, when the lead (II) nitric acid meets sodium sulfide, the chemical phase is excited, and the lead ion and the sulfur ion are combined, thus forming the precipitation of lead sulfide. The corresponding formula is as follows:
$Pb (NO_3) _2 + Na_2S\ longrightarrow PbS\ downarrow + 2NaNO_3 $
Looking at this experiment, it can be seen that the substances are mixed, the changes are gratuitous, and the chemistry is wonderful and unfathomable. Scholars should be careful about the operation, carefully observe the changes, and use the mystery of chemistry.
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