Which of the following liquids can dissolve noble metals such as gold and platinum?
Answer & explanation
Correct answer: option 2
The correct answer is option 2.Aqua regia.
The liquid that can dissolve noble metals such as gold and platinum is Aqua regia
Aqua regia is a mixture of concentrated nitric acid (HNO₃) and hydrochloric acid (HCl) in a 1:3 ratio. It is known for its ability to dissolve noble metals, including gold and platinum, which are otherwise resistant to corrosion by individual acids.