Question

Which of the following is completely soluble in aqua regia?

• A. $AgI$
• B. $AgCl$
• C. $AgBr$
• D. none of the above

Answer 1

Answer: (B)

$AgCl$

Aqua regia is one of the strongest acids and is capable of dissolving $Au$ and $Pt$.

Metallic $Ag$ does not dissolve in aqua-regia but undergoes a very slow reaction with $AgCl$ and for a very short amount of time. This slow reaction takes place due to the formation of complex.