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Aqua regia is...

Aqua regia is

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Aqua regia is a highly corrosive and fuming liquid. It is a freshly prepared mixture of conc. HCI and conc. `HNO_(3)` in the ratio of 3:1. Most of the substances dissolves in it. Aqua regia is a reagent which dissolbves gold and platinum.
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Knowledge Check

  • Read the following and answer any four questions Sohan went door to door posing as a goldsmith. He promised to bring back the glitter of old and dull gold ornaments. An unsuspecting lady gave a set of gold bangles to him which he dipped in a particular solution. The bangles sparkled like new but their weight was reduced drastically. The lady was sad but after a futile argument, the man beat a hasty retreat. Aqua regia dissolves:

    A
    Gold and platinum
    B
    Gold and silver
    C
    Platinum and silver
    D
    Only gold

  • Aqua regia has the composition :

    A
    1 part conc. `HNO_3 + 2` parts conc. HCI
    B
    1 part conc. `HNO_3 + 3` parts conc. HCI
    C
    1 part conc. `HNO_3` + 1 part conc. HCl
    D
    2 parts conc. `HNO_3 + 3` parts conc. HCI

  • Aqua regia a mixture of ?

    A
    `3:` ratio of conc HCl and Conc. `HNO_(3)`
    B
    `3:1` ratio of conc `HNO_(3)` and Conc. HCl
    C
    `1:3` ratio of conc HCl and Con. `HNO_(3)`
    D
    `1:3` ratio of conce HCl and conc .`H_(2)SO_(4)`

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