Write the names of chemical substances used for leaching of ore containing silver
and Gold
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ஜ۩۞۩ஜ[ ANSWER ]ஜ۩۞۩ஜ
➡The Chemical substance is known as Aqua Regia.
✳✳✳✳✳✳✳✳✳✳✳✳
◼Gold and silver are consider noble metals and can't be dissolved in any liquid or acid like Nitric acid (HNO3) ,Sulphuric acid(H2SO4 ),Hydrochloric acid (HCL) etc.
So, for these metals a metals a chemical substance is made by mixing Nitric acid and Hydrochloric acid in 1:3 proportion which is known as Aqua Regia.
⚫Nitric acid oxidises the hydrochloric acid to chlorine.
⚫The liberated chlorine in the nascent form reacts with gold or platinum from the respective soluble higher chlorides.
EQUATIONS :---
HNO3[conc.] +3HCl [conc. ] -->2H2O +NOCL + 2[Cl]
➡Au +3[Cl] -->AuCl3[gold III chloride ]
➡Pt +4[Cl] -->PtCl4[platinum IV chloride ]
➶➶➶➶➶[ HOPE IT HELPS ]➷➷➷➷➷
➡The Chemical substance is known as Aqua Regia.
✳✳✳✳✳✳✳✳✳✳✳✳
◼Gold and silver are consider noble metals and can't be dissolved in any liquid or acid like Nitric acid (HNO3) ,Sulphuric acid(H2SO4 ),Hydrochloric acid (HCL) etc.
So, for these metals a metals a chemical substance is made by mixing Nitric acid and Hydrochloric acid in 1:3 proportion which is known as Aqua Regia.
⚫Nitric acid oxidises the hydrochloric acid to chlorine.
⚫The liberated chlorine in the nascent form reacts with gold or platinum from the respective soluble higher chlorides.
EQUATIONS :---
HNO3[conc.] +3HCl [conc. ] -->2H2O +NOCL + 2[Cl]
➡Au +3[Cl] -->AuCl3[gold III chloride ]
➡Pt +4[Cl] -->PtCl4[platinum IV chloride ]
➶➶➶➶➶[ HOPE IT HELPS ]➷➷➷➷➷
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