Question

Name the reagent that dissolves noble metals.​

Answer 1

Answer:

Aqua-regia is that re-agent that dissolves noble metals, like— Gold, Platinum, etc.

• Aqua regia is a mixture of hydrochloric acid (HCl) and nitric acid (HNO3) at a ratio of either 3:1 or 4:1. It is a reddish-orange or yellowish-orange fuming liquid. The term is a Latin phrase, meaning "king's water"

Answer 2

Answer:

Aqua Regia

Explanation:

Also, known as royal water, aqua regia is a reagent that can dissolve noble metals too.

For example, it can dissolve gold, which is a very unreactive metal.

It is composed of 3 parts of HCl and 1 part of HNO₃.

It is used by jewelers to 'clean' noble metals (by dissolving the uppermost layer).