What is Aqua-regia? Name Two Special Metals Which Are Insoluble in Common Reagents but Dissolve in Aqua-regia. - Science

What is aqua-regia? Name two special metals which are insoluble in common reagents but dissolve in aqua-regia.

Solution

Aqua-regia is a freshly prepared mixture of one part of concentrated nitric acid and three parts of concentrated hydrochloric acid. Gold and platinum are the special metals that are insoluble in common reagents but dissolve in aqua-regia.

Concept: Refining of Metals

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Chapter 3: Metals and Non-metals [Page 132]

Q 9 Q 8 Q 10.1

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Lakhmir Singh Class 10 Chemistry (Science)

Chapter 3 Metals and Non-metals
Q 9 | Page 132

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What is Aqua-regia? Name Two Special Metals Which Are Insoluble in Common Reagents but Dissolve in Aqua-regia. - Science

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