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What is aqua regia? How is it prepared?...

What is aqua regia? How is it prepared?

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i.Aqua regia is a highly corrosive and fiming liquid.
ii. It is one of the few reagents that are able to dissolve gold and platinum.
iii. It is prepared by mixing concentrated hydrochloric acid and concentrated nitric acid in the ratio of 3:1.
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Knowledge Check

  • Aqua regia is

    A
    `conc. HC + conc. HNO_3 in 1: 3 ratio`
    B
    `dil. HCI and di.HNO_3 in 3:1 ratio`
    C
    `dil. HCT and dil. HNO_3 in 3:1 ratio`
    D
    `conc. HCl and conc. HNO_3 in 3 : 1 ratio`

  • Aqua regia is

    A
    `Conc. HNO_3 + 2 conc. HCl`
    B
    `Conc. HNO_3 + 3 conc. HCl`
    C
    `Conc. HNO_3 + NO_2`
    D
    `Conc.HNO_3 + conc. H_2 SO_4`

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