Chemistry, asked by shalinichaurasiya05, 1 month ago

Gold and platinum dissolve in ………………. which is a mixture of conc. HCl and conc. HNO3in the ratio of…………….by volume.​

Answers

Answered by Boneiy
1

Answer:

Gold and platinum dissolve in Aqua Regia which is a mixture of conc.HCI and conc. HNO3in the ratio of nitric acid by volume.

Explanation:

Aqua Regia (HNO3 + 3HCl) is used to etch gold or platinum. It is a mixture of Nitric acid and Hydrochloric acid that is freshly mixed before use. Optimally it is in a molar ratio of 1 part nitric acid to 3 parts hydrochloric acid.

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