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ICSE - XII Science - Chemistry
Benzene and toulene boil at same temperature
Asked by bharanichemistry123
5th July 2021,
3:43 PM
ICSE - XII Science - Chemistry
A copper concentrate (CuFeS2 + FeS2 + gangue) of composition (wt%) Cu = 6%, S = 35% is roasted with (20+RN*)% excess air. Copper in the roasted product is as Cu2S and all the iron is converted to Fe2O3. Assuming that the gangue does not contain any Cu, Fe and S, Calculate for 1 ton of concentrate i) amount of minerals and gangue ii) volume of air supplied for roasting at STP. iii) Volume and composition of the evolved gas (flue) after roasting [atomic weight of Cu=64, Fe= 56, S=32, O=16, N=14]
Asked by deepakmardi22
21st November 2020,
10:09 AM
ICSE - XII Science - Chemistry
For reaction A(g) + B(g) AB(g) we start with 2 moles of A and B each. At equilibrium 0.8 moles of AB is formed. Then how much of A changes to AB :- (1) 20% (2) 40% (3) 60% (4) 4%
Asked by Atulcaald
25th May 2018,
12:27 AM
Browse free questions and answers Chapters
- 1 The Solid State
- 2 Solutions
- 3 Electrochemistry
- 4 Chemical Kinetics
- 5 Surface Chemistry
- 6 Isolation of Elements
- 7 The p-Block Elements
- 8 The d-Block and f-Block Elements
- 9 Coordination Compounds
- 10 Haloalkanes and Haloarenes
- 11 Alcohols, Phenols and Ethers
- 12 Aldehydes, Ketones and Carboxylic Acids
- 13 Amines
- 14 Biomolecules
- 15 Polymers
- 16 Chemistry in Everyday Life
