KCET · Chemistry · Aldehydes and Ketones
The IUPAC name of the complex ion formed when gold dissolves in aquaregia is
- A tetrachloridoaurate(I)
- B dichloridoaurate(III)
- C tetrachloridoaurate(III)
- D tetrachloridoaurate(II)
Answer & Solution
Correct Answer
(C) tetrachloridoaurate(III)
Step-by-step Solution
Detailed explanation
When gold dissolves in aqua region it gives tetrachloridoaurate (III) anion.
\( 2 \mathrm{Au}+3 \mathrm{H} \mathrm{N} \mathrm{O}_{3}+11 \mathrm{HCl} \rightarrow 2 \mathrm{H}\left[\mathrm{AuCl}_{4}\right]+3 \mathrm{NOCl}+6 \mathrm{H}_{2} \mathrm{O} \)
\( 2 \mathrm{Au}+3 \mathrm{H} \mathrm{N} \mathrm{O}_{3}+11 \mathrm{HCl} \rightarrow 2 \mathrm{H}\left[\mathrm{AuCl}_{4}\right]+3 \mathrm{NOCl}+6 \mathrm{H}_{2} \mathrm{O} \)
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