Answer
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Hint: The ability of a solid, liquid, or gaseous chemical substance called a solute to dissolve in a solid, liquid, or gaseous solvent is known as solubility. The physical and chemical properties of the solute and solvent, as well as temperature, pressure, and the presence of other chemicals (including changes in pH) in the solution, all influence the solubility of a substance. The saturation concentration of a product in a given solvent is the point at which adding more solute does not increase the concentration of the solution and starts to precipitate the excess amount of solute.
Complete answer:
The poisonous compound sodium cyanide (NaCN) has the formula NaCN. It's a water-soluble white solid. Cyanide has a high affinity for metals, which contributes to its high toxicity. Its main application, gold mining, takes advantage of its high metal reactivity. It's a moderate base. It produces the poisonous gas hydrogen cyanide when exposed to acid.
Silver chloride, also known as AgCl, is a chemical compound with the formula AgCl. The low solubility of this white crystalline solid in water is well known. Silver chloride transforms to silver (and chlorine) when exposed to light or heat, as shown by the grey to black or purplish coloration of certain samples. AgCl is found in nature as the mineral chlorargyrite.
In NaCN, AgCl dissolves. In reality, a patent method known as the Mac-Arthur Forrest Cyanide process uses a similar principle to extract Ag from its ore.
However, the solubility of Ag in NaCN is due to the development of a coordination complex of Sodium Argento cyanide (which is soluble)
\[A{g^ + }{\text{ }} + {\text{ }}NaCN \to {\text{ }}Na\left[ {Ag{{\left( {CN} \right)}_2}} \right]\] (soluble complex).
The same complex is then used in the Mac Arthur method to get Ag (precipitate) by adding Zn, which is more electropositive and displaces Ag from the complex.
Note:
Silver chloride, also known as AgCl, is a chemical compound with the formula AgCl. The low solubility of this white crystalline solid in water is well known. Silver chloride transforms to silver (and chlorine) when exposed to light or heat, as shown by the grey to black or purplish coloration of certain samples. AgCl is found in nature as the mineral chlorargyrite.
Complete answer:
The poisonous compound sodium cyanide (NaCN) has the formula NaCN. It's a water-soluble white solid. Cyanide has a high affinity for metals, which contributes to its high toxicity. Its main application, gold mining, takes advantage of its high metal reactivity. It's a moderate base. It produces the poisonous gas hydrogen cyanide when exposed to acid.
Silver chloride, also known as AgCl, is a chemical compound with the formula AgCl. The low solubility of this white crystalline solid in water is well known. Silver chloride transforms to silver (and chlorine) when exposed to light or heat, as shown by the grey to black or purplish coloration of certain samples. AgCl is found in nature as the mineral chlorargyrite.
In NaCN, AgCl dissolves. In reality, a patent method known as the Mac-Arthur Forrest Cyanide process uses a similar principle to extract Ag from its ore.
However, the solubility of Ag in NaCN is due to the development of a coordination complex of Sodium Argento cyanide (which is soluble)
\[A{g^ + }{\text{ }} + {\text{ }}NaCN \to {\text{ }}Na\left[ {Ag{{\left( {CN} \right)}_2}} \right]\] (soluble complex).
The same complex is then used in the Mac Arthur method to get Ag (precipitate) by adding Zn, which is more electropositive and displaces Ag from the complex.
Note:
Silver chloride, also known as AgCl, is a chemical compound with the formula AgCl. The low solubility of this white crystalline solid in water is well known. Silver chloride transforms to silver (and chlorine) when exposed to light or heat, as shown by the grey to black or purplish coloration of certain samples. AgCl is found in nature as the mineral chlorargyrite.
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