wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

With reference to aqua regia, choose the correct option(s):


A

Aqua regia is prepared by mixing conc. HCl and conc. HNO3 in 3:1 molar ratio.

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B

Reaction of gold with aqua regia produces an anion having Au in +3 oxidation state.

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C

Reaction of gold with aqua regia produces NO2 in the absence of air

No worries! We‘ve got your back. Try BYJU‘S free classes today!
D

The yellow color of aqua regia is due to the presence of NOCl & Cl2.

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

The correct option is D

The yellow color of aqua regia is due to the presence of NOCl & Cl2.


Explanation for correct options:

Options A, B, and D:

The equation is as follows:

Au(s)+HNO3(aq)+4HCl(aq)[AuCl4]-(aq)+[NO](aq)+H3O+(aq)+H2O(l)

  1. Conc. HCl and conc. HNO3 in 3:1 molar ratio is mixed to prepare aquaregia.
  2. Reaction of gold with aqua regia produces an anion having Au in +3 oxidation state.
  3. The yellow color of aqua regia is due to the presence of NOCl & Cl2 .

Explanation of the incorrect option:

Option C:

  1. Reaction of gold with aqua regia produces NOCl/NO in the absence of air.

flag
Suggest Corrections
thumbs-up
3
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Hydrogen Chloride
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon