What is the final chemical form of Gold (Au) when it is dissolved in aqua-regia?

Question

What is the final chemical form of Gold (Au) when it is dissolved in aqua-regia? (A) Au (B) AuCl (C) AuCl 2 (D) [ AuCl 4]-

Tardigrade Admin · Accepted Answer

When gold (Au) dissolved in aqua-regia, it forms chloroauric (HAuCl 4 ) ion. It will react very slowly with chlorin gas at room temperature to form gold chloride. We know that aqua-regia is <img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/chemistry/0a9a8475a51dc49d6c8f11aa51bb227e-.png" />

Q. What is the final chemical form of Gold (Au) when it is dissolved in aqua-regia?

$A u$

$A u Cl$

$A u C l_{2}$

$[A u C l_{4}]^{-}$

When gold (Au) dissolved in aqua-regia, it forms chloroauric $(H A u C l_{4})$ ion. It will react very slowly with chlorin gas at room temperature to form gold chloride. We know that aqua-regia is

Q. What is the final chemical form of Gold (Au) when it is dissolved in aqua-regia?

Au

AuCl

AuCl2​

[AuCl4​]−

When gold (Au) dissolved in aqua-regia, it forms chloroauric (HAuCl4​) ion. It will react very slowly with chlorin gas at room temperature to form gold chloride. We know that aqua-regia is

$A u$

$A u Cl$

$A u C l_{2}$

$[A u C l_{4}]^{-}$

When gold (Au) dissolved in aqua-regia, it forms chloroauric $(H A u C l_{4})$ ion. It will react very slowly with chlorin gas at room temperature to form gold chloride. We know that aqua-regia is