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Name the reagent which is able to dissolve gold and platinum?

Posted by Maahi ......♾ 5 years, 3 months ago

CBSE > Class 10 > Science

5 answers

Maahi ......♾ 5 years, 3 months ago

Thanks everyone...... for answering my questions....

0Thank You

Shubham Saxena ???? 5 years, 3 months ago

Gold and platinum don't react with almost any chemical . And aqua regia is the chemical mixture 1 . Hydrochloric acid and 3 parts of nitric acid this mixture can be dissolve gold and platinum . Thank you

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John Pothen 5 years, 3 months ago

Aqua Regis(formed by 3 parts of nitric acid and 1 HCL)

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Yogita Ingle 5 years, 3 months ago

Gold and Platinum belong to class of noble metals in the sense that gold and platinum do not react with almost any chemical reagent.
Aqua Regia is the chemical mixture which consists of 3 parts of concentrated hydrochloric acid and 1 part of concentrated nitric acid and this mixture can dissolve gold and platinum. The reaction is as follows:

Au + HNO₃ + 4 HCl → HAuCl₄ + NO + 2 H₂O

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Taniya Khathuria 5 years, 3 months ago

"regal water" or "king's water" is a mixture of nitric acid and hydrochloric acid, optimally in a molar ratio of 1:3. Aqua regia is a yellow-orange (sometimes red) fuming liquid, so named by alchemists because it can dissolve the noble metals, gold and platinum

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CBSE > Class 10 > Science