Aqua-regia was so named by alchemists because it can dissolve noble metals like gold and platinum. Which of the following represents the correct composition of Aqua-regia?

1 H N O_{3} + 3 H C l

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1 H C l + 3 H N O_{3}

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1 H C l + 1 H N O_{3}

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1 H N O_{3} + 2 H C l

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Solution

The correct option is A $1 H N O_{3} + 3 H C l$
Aqua regia is a mixture of hydrochloric acid (HCl) and nitric acid $(H N O_{3})$ in a ratio of 3:1, i.e. a solution with 3 parts hydrochloric acid (HCl) added to 1 part of Nitric acid $(H N O_{3})$ by volume.

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Aqua-regia was so named by alchemists because it can dissolve noble metals like gold and platinum. Can you identify the correct composition of Aqua-regia from the given options?

Q. Aqua regia is used to dissolve noble metals such as Pt(Platinum) and Au(Gold).

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Metals like gold and platinum.

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Aqua-regia was so named by alchemists because it can dissolve noble metals like gold and platinum. Which of the following represents the correct composition of Aqua-regia?

The correct option is A 1HNO3+3HClAqua regia is a mixture of hydrochloric acid (HCl) and nitric acid (HNO3) in a ratio of 3:1, i.e. a solution with 3 parts hydrochloric acid (HCl) added to 1 part of Nitric acid (HNO3) by volume.

The correct option is A $1 H N O_{3} + 3 H C l$
Aqua regia is a mixture of hydrochloric acid (HCl) and nitric acid $(H N O_{3})$ in a ratio of 3:1, i.e. a solution with 3 parts hydrochloric acid (HCl) added to 1 part of Nitric acid $(H N O_{3})$ by volume.