• AglaSem
  • Schools
  • Admission
  • Career
  • CutOffs
  • News
  • Hindi
  • Bengali
  • Mock Test
  • Docs
  • ATSE
aglasem
  • CBSE
    • Date Sheet
    • Question Papers
    • Sample Papers
  • ICSE / ISC
  • State Boards
    • Date Sheet
    • Result
  • NCERT
    • NCERT Books
    • NCERT Solutions
  • Mock Tests
  • Study Material
    • Notes
  • Olympiads
    • ATSE
    • KVPY
    • NTSE
    • NMMS
  • School Admission
  • Entrance Exams
    • JEE Main
    • NEET
    • CLAT
  • Students Guide
    • Careers Opportunities
    • Courses & Career
    • Courses after 12th
  • Others
    • HC Verma Solutions
    • Classes
    • Videos
    • Resources
No Result
View All Result
aglasem
  • CBSE
    • Date Sheet
    • Question Papers
    • Sample Papers
  • ICSE / ISC
  • State Boards
    • Date Sheet
    • Result
  • NCERT
    • NCERT Books
    • NCERT Solutions
  • Mock Tests
  • Study Material
    • Notes
  • Olympiads
    • ATSE
    • KVPY
    • NTSE
    • NMMS
  • School Admission
  • Entrance Exams
    • JEE Main
    • NEET
    • CLAT
  • Students Guide
    • Careers Opportunities
    • Courses & Career
    • Courses after 12th
  • Others
    • HC Verma Solutions
    • Classes
    • Videos
    • Resources
No Result
View All Result
aglasem
No Result
View All Result
Home 12th Class

CBSE Class 12 Chemistry Notes: The p Block Elements – Nitrogen Family (Oxyacids of Nitrogen)

by Anand Meena
April 22, 2019
in 12th Class, Class Notes
3 min read
0
2
SHARES
0
VIEWS
Share on FacebookShare on Twitter

Oxides of N, P and As when dissolves in water to form oxy acids. Oxy acids of Sb and Bi are not stable.

Some important oxy acids:

Element Formula of the oxyacid Name of the oxyacid Oxidation state of element in oxyacid
Nitrogen H2N2O2 Hyponitrous acid +1
HNO2 Nitrous acid +3
HNO3 Nitric acid +5
Phosphorus H3PO2 Hypo phosphorus acid +1
H3PO3 Phosphorus acid +3
H3PO4 Phosphoric acid +5
(HPO4)n Metaphosphoric acid +5
H4P2O7 Pyrophosphoric acid +5
Arsenic H3AsO3 Arsenious acid +3
H3AsO4 Arsenic acid +5
Sb & Bi No stable acid

Oxyacids of Nitrogen , HNO3 , Nitric acid
Nitric acid is also known as aqua fortis (meaning strong water) which was given by alchemists.

Methods of preparation
(a) Laboratory preparation

KNO3 + H2SO4 → KHSO4 + HNO3

(b) Birkeland Eyde process

N2 + O2 ⇌ 2NO – 43,200 calories

The formation of nitric oxide is favoured by high temperature thus it is maintained at 3000°C.
The nitric oxide is cooled to 1000oC as to prevent its decomposition. Nitric oxide further combines with O2 .
2NO + O2 → 2NO2
The vapours then passed through water when nitric acid is produced.
2NO2 + H2O → HNO3 + HNO2
3HNO2 → HNO3 + 2NO + H2O

(c) Ostwald’s process (Modern process)
In this process the nitric acid is formed first when NH3 and air passed over platinum gauze at 750 – 900°C

The p Block Elements Chemistry Notes
The nitric oxide is then oxidised to NO2 by air which is cooled to 50°C and absorbed in water.
2NO + O2 → 2NO2
3NO2 + H2O → 2HNO3 + NO

Fuming nitric acid
When NO2 is dissolved in conc. nitric acid it forms fuming nitric acid. It is brown in colour. It is obtained by distilling concentrated HNO3 with a little starch.

Physical properties
HNO3 is colourless fuming with pungent smell soluble in water. Nitric acid usually acquires yellow
colour due to its decomposition by sunlight into NO2 .

The p Block Elements Chemistry Notes
Chemical properties

The p Block Elements Chemistry Notes

The p Block Elements Chemistry Notes

« Click Here for Previous Topic Click Here for Next Topic »

Class 12 Chemistry “The p Block Elements” All Topic Notes Class 12 Chemistry All Chapters Notes

ATSE 2020 Scholarship Test!! Apply Now!!
Tags: CBSE 12 NotesCBSE Class NotesCBSE NotesClass 12 NotesClass 12thFree CBSE NotesFree Notes

Anand Meena

Full time entrepreneur, likes to indulge in writing reviews about the latest technologies apart from helping students in career and exam related topics.

Related Posts

KVPY 2019 – Result (Released), Cut Off
11th Class

KVPY 2019 – Result (Released), Cut Off

National Science Olympiad (NSO)
10th Class

22nd National Science Olympiad (NSO) 2019- 2020: Answer Key (Released!)

22nd National Science Olympiad (NSO) 2019- 2020: Answer Key (Released!)
12th Class

22nd NSO 2019 – 20 Set A, B Answer Key (Released) – Class 12

12th Class

Assam HS 2nd Year Routine 2020 | AHSEC HS Final Exam – Released!

Next Post

CBSE Class 12 Chemistry Notes: The p Block Elements - Question and Answers

Discussion about this post

Registration Open!!

NIIT Admission 2020 Open - Apply Now!
ATSE 2020 Scholarship Test - Apply Now!
Manipal University Admission 2020 - Apply Now!!
UPES 2020 Admission Open - Apply Now!!

Subscription

Top Three

CBSE Class 12 Chemistry Notes: The p Block Elements – Nitrogen Family (Oxyacids of Nitrogen)

Maharashtra Board

Jawahar Navodaya Vidyalaya Admit Card 2020 (Available) – Download JNVST Admit Card for First Phase

Maharashtra Board

Jawahar Navodaya Vidyalaya Application Form 2020 (Available!) – Apply Online for JNVST

  • Disclaimer
  • Terms of Use
  • Privacy Policy
  • Contact

© 2019 aglasem.com

No Result
View All Result
  • CBSE
    • Date Sheet
    • Question Papers
    • Sample Papers
  • ICSE / ISC
  • State Boards
    • Date Sheet
    • Result
  • NCERT
    • NCERT Books
    • NCERT Solutions
  • Mock Tests
  • Study Material
    • Notes
  • Olympiads
    • ATSE
    • KVPY
    • NTSE
    • NMMS
  • School Admission
  • Entrance Exams
    • JEE Main
    • NEET
    • CLAT
  • Students Guide
    • Careers Opportunities
    • Courses & Career
    • Courses after 12th
  • Others
    • HC Verma Solutions
    • Classes
    • Videos
    • Resources

© 2019 aglasem.com