Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 12-science Answered

Derive the formula of the ferric oxide
Asked by Saransekar407 | 11 Mar, 2019, 06:47: PM
answered-by-expert Expert Answer
Question: 

Ferric oxide crystallizes in a hexagonal close-packed array of oxide ions with two out of every three octahedral holes occupied by ferric ions. Derive the formula of the ferric oxide.

 
Answer:
 
A unit cell of hcp structure = 6

No. of oxide ions per unit cell = 6

No. of octahedral voids = 6 Since, ferric ions occupy only two out of every three octahedral voids,

Therefore, no. of octahedral holes occupied by ferric ions = 2 over 3 cross times 6 space equals space 4

Stoichiometric ratio of Fe : O = 4:6 = 2:3 Hence, formula of ferric oxide = Fe2O3.
Answered by Ramandeep | 11 Mar, 2019, 07:24: PM

Concept Videos

CBSE 12-science - Chemistry
Asked by karennavarpriya | 20 Aug, 2021, 01:53: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by apoorvaks26 | 10 May, 2021, 09:24: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by someshmule5 | 05 Jan, 2021, 01:25: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by deepakatur454 | 16 Oct, 2020, 01:18: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by hemanthkumarbk2356 | 02 Aug, 2020, 12:16: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by harishshrivastava855 | 21 Jun, 2020, 09:26: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by manjurana04933 | 16 Apr, 2020, 11:00: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by Saransekar407 | 11 Mar, 2019, 06:47: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by yaag8432 | 05 Mar, 2019, 07:28: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
Get Latest Study Material for Academic year 24-25 Click here
×