Question
Download Solution PDFWhich of the following acids is used in the purification of gold and silver?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is Nitric acid.
- Nitric acid is used in the purification of gold and silver.
Key Points
- Nitric acid is used in the purification of gold. The acid mixture aqua regia, or royal water, dissolves gold and is used to purify scrap alloy containing gold.
- Aqua regia is a mixture of hydrochloric acid and nitric acid in a 3:1 ratio.
- Nitric acid is a nitrogen oxoacid of formula HNO3 in which the nitrogen atom is bonded to a hydroxy group and by equivalent bonds to the remaining two oxygen atoms.
Important Points
| Acid Name | Details |
| Acetic acid |
|
| Maleic acid |
|
| Formic acid |
|
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