Mention the type of reaction to obtain ${\rm{Au}}\left( {{\rm{sol}}} \right)$. Reaction, $2{\rm{AuC}}{{\rm{l}}_3} + 3{\rm{HCHO}} + 3{{\rm{H}}_2}{\rm{O}} \to 2{\rm{Au}}\left( {{\rm{sol}}} \right) + 3{\rm{HCOOH}} + 6{\rm{HCl}}$

NEET UG CHEMISTRY MCQ: SURFACE CHEMISTRY

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Understanding +4 | -1

Mention the type of reaction to obtain

\mathrm{Au}\left( {\mathrm{sol}} \right)

.
Reaction,

2\mathrm{AuC}{\mathrm{l}_3} + 3\mathrm{HCHO} + 3{\mathrm{H}_2}\mathrm{O} \to 2\mathrm{Au}\left( {\mathrm{sol}} \right) + 3\mathrm{HCOOH} + 6\mathrm{HCl}

View answer and explanation

Correct option: C

Reduction

Option C (Reduction) is correct because the gold ions (

\mathrm{AuC}{\mathrm{l}_3}

) are reduced to gold atoms (

\mathrm{Au}

) in the reaction.

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