Advertisements
Advertisements
Question
Give reason for the following:
Aqua regia dissolves gold and platinum.
Advertisements
Solution
\[\ce{3HCl + HNO3 -> 2H2O + NOCl + 2[Cl]}\]
Gold in Aqua regia :
\[\ce{Au + 4[Cl] -> AuCl3}\]
Platinum in Aqua regia :
\[\ce{Pt + 4[Cl] -> PtCl4 }\]
APPEARS IN
RELATED QUESTIONS
Explain the following:
An all-glass apparatus is used in the laboratory preparation of nitric acid.
What is the type of salt formed when the reactants are heated at a suitable temperature for the preparation of Nitric acid?
What are the reactants required for Ostwald process and what are their sources?
Give three equations of the reaction to prove that nitric acid is an acid.
How will you prepare Aqua regia from nitric acid?
What do you observe when?
Concentrated nitric acid is dropped on a hot surface?
Choose the correct answer from the option given below :
Concentrated nitric acid oxidises phosphorus to :
Fill in the blank with appropriate word/words.
Aqua regia is a mixture of _______ and________
Give reason for the following:
Commercial concentrated nitric acid is yellow in colour, but when it is dilute with water, it turns colourless.
Give one chemical test for nitric acid.
Complete the table:
| Name of Process | Inputs | Equation | Output |
| Ammonia + Air | Nitric acid |
