CBSE Class 12-science Answered
the composition of a sample of iron ore is Fe.93 O 1.00.What percentage of iron is in the form of Fe(III)
Asked by dipak kumar Saikia | 12 Jul, 2013, 02:34: AM
Expert Answer
Suppose the number of atoms of Fe 3+ ions present is = x.
Then tn=he number of atoms of Fe2+ ions would be = (o.93 - x )
So, the total number of O2- ions = 1
For an electrically neutral compound,
total positive charge from Fe2+ + Fe 3+ = total negative charge from O2- ions.
Thus 3x + (0.93 - x ) x2 = 2
or, x + 1.86 = 2.
x = ( 2 - 1.86) = 0.14
% of Fe 3+ ions 0.14
------ x 100 = 15.05
0.93
% of Fe 3+ ions is 15.05 %.
Answered by | 17 Jul, 2013, 10:42: PM
Concept Videos
-
Expressing concentration of solutions
Learn the types of solution, ways of expressing the concentration of soluti... -
Ideal Solutions
This video explains concept of colligative properties and vapour pressure, ... -
Osmosis and Osmotic Pressure
This video explains osmosis, reverse osmosis, osmotic pressure, relating os... -
Concepts on Boiling and Freezing points of solution ...
Learn the meaning of elevation in boiling point & depression in freezing po... -
Association and dissociation of compounds
Discuss the meaning of abnormal molecular masses due to association & disso...
CBSE 12-science - Chemistry
Asked by hannamaryphilip | 17 Apr, 2024, 11:20: PM
ANSWERED BY EXPERTCBSE 12-science - Chemistry
Asked by sameerteli003 | 08 Apr, 2024, 11:48: PM
ANSWERED BY EXPERTCBSE 12-science - Chemistry
Asked by rashmij34 | 27 Feb, 2024, 04:42: PM
ANSWERED BY EXPERTCBSE 12-science - Chemistry
Asked by sagarmishra | 27 Feb, 2024, 04:01: PM
ANSWERED BY EXPERTCBSE 12-science - Chemistry
Asked by kalandi.charan.407 | 08 Feb, 2024, 01:42: PM
ANSWERED BY EXPERTCBSE 12-science - Chemistry
Asked by premkhare2006 | 24 Jan, 2024, 09:50: AM
ANSWERED BY EXPERTCBSE 12-science - Chemistry
Asked by saritanohar22 | 13 Jan, 2024, 01:25: PM
ANSWERED BY EXPERTCBSE 12-science - Chemistry
Asked by kaushikmisty07 | 31 Dec, 2023, 11:42: AM
ANSWERED BY EXPERTCBSE 12-science - Chemistry
Asked by kamlesh.kumar.malee | 20 Dec, 2023, 06:59: AM
ANSWERED BY EXPERTCBSE 12-science - Chemistry
Asked by varinder2149 | 10 Dec, 2023, 08:21: PM
ANSWERED BY EXPERT
