Dianfeng Chemical
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Sodium Sulfide Copper II Sulfate
The Transformation of Sodium Sulfide and Copper Sulfate
I used to be a scholar, specializing in the change of physical properties. One day, I took Sodium Sulfide and Copper II Sulfate, to see the wonders of the phase of the two.
Put sodium sulfide in the container, its color is yellow, strong, and rancid. Take copper sulfate, its crystal blue, it dissolves when it enters water, and the liquid is a faint blue.
Slowly pour the liquid of sodium sulfide into the copper sulfate solution. In an instant, a strange phenomenon occurs. When the two touch, black precipitation starts, like a cloud, sinks to the bottom of the vessel. This is Copper Sulfide, its color is black, its properties are stable, and it does not dissolve in water.
Scholars observe the change in detail and think about why. When the sulfur ions ($S ^ {2 -} $) in sodium sulfide and the copper ions ($Cu ^ {2 + }$）， in copper sulfate meet, according to the laws of chemistry, the phase combines to produce copper sulfide precipitation. The reaction formula is: $Na_ {2} S + CuSO_ {4} = CuS\ downarrow + Na_ {2} SO_ {4} $.
Through this experiment, scholars know the wonders of the combination of substances, and the phase of physical properties changes according to a fixed method and does not change at will. Looking at the changes of the two, we can see that the mystery of chemistry is endless.
I used to be a scholar, specializing in the change of physical properties. One day, I took Sodium Sulfide and Copper II Sulfate, to see the wonders of the phase of the two.
Put sodium sulfide in the container, its color is yellow, strong, and rancid. Take copper sulfate, its crystal blue, it dissolves when it enters water, and the liquid is a faint blue.
Slowly pour the liquid of sodium sulfide into the copper sulfate solution. In an instant, a strange phenomenon occurs. When the two touch, black precipitation starts, like a cloud, sinks to the bottom of the vessel. This is Copper Sulfide, its color is black, its properties are stable, and it does not dissolve in water.
Scholars observe the change in detail and think about why. When the sulfur ions ($S ^ {2 -} $) in sodium sulfide and the copper ions ($Cu ^ {2 + }$）， in copper sulfate meet, according to the laws of chemistry, the phase combines to produce copper sulfide precipitation. The reaction formula is: $Na_ {2} S + CuSO_ {4} = CuS\ downarrow + Na_ {2} SO_ {4} $.
Through this experiment, scholars know the wonders of the combination of substances, and the phase of physical properties changes according to a fixed method and does not change at will. Looking at the changes of the two, we can see that the mystery of chemistry is endless.
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