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plz explain the ellingham diagram more clearly with examples as it is not clear
what is the principle of leaching ?
what is the role of Depressant in froth floatation method.
principle of froth floatation ?
n-factor of k2cr2o7 in acidic med?
what is the role of collectors in froth floatation?
What is flux ? What is itz role in metallurgy of Iron n Copper ?
What is Hardy-Schulze rule???
What is the meaning of 'the solution is seeded with freshly prepared samples of hydrated Al2O3'.? it is in page 150 of ncert under the heading leaching.
explain the principle of zone refining
Why Zinc oxide can be reduced to the metal by heating with carbon but not Cr2O3
Why is froth floatation process used to extract SULPHIDES????? y sulphides!??!!
what is the principle of electrolytic refining?
Explain the role of NaCN in the extraction of silver.is it necessary to write reaction or fine to write answer asNaCN forms a complex with Ag which again on reaction with Zn gives pure Ag. So, What should I expect with the examiner
why do noble gases have comparatively large atomic sizes?
limitation of crystal field theory
Outline The Principle Of Refining Of Metals In The Following Methods
(A) Electrolytic Refining
(B) Vapour Phase Refining
(C) Zone Refining
what is a vertical fire clay retort
Zone refining (ii) Column chromatography.
what is the role of graphite rod in the electrometallurgy of aluminium???
what are froth stabilizers?
In Ellingham Diagram, it is mentioned that when the materials melt/vaporize, the entropy change makes the slope of the graph more higher, increasing Gibbs free energy (becomes less -ve).
But, in such cases∆S becomes +ve as the randomness increase due to phase change (solid to liquid or liquid to gas), and according to the equation∆G =∆H - T∆S,∆G should become more -ve! Please explain with help of the equation and do correct my statement.
why pine oil is added in froth floatation method?
WHAT IS VAN ARKEL METHOD FOR REFINING ZIRCONIUM OR TITANIUM??? PLZZZ ANSER IT ...........
what is the criterion for the selection of stationary phase in chromatography?
Can u plz explain me ellingham diagram?Nd how we get to know abt the feasibility??
What is the role of silica in the extraction of copper from copperpyrite ore?
how does extraction of Copper happens ??
what is acidic flux and basic flux
outline the principle of the method used for refining of
Out of C & CO , which is a better reducing agent far FeO?
Explain with reason ?
how is wrought iron different from steel???
what is a crude metal is it pure metal
Meritnation experts can you please explain Ellingham diagram in NCERT page 152,153 much more detail?
explain role:1.CO in the extraction of nickel.
2.zinc in the extraction of silver.
3.iodine in refining of zinconium.
4.depressant in froth-floation method.
5.graphite rods in metallurgy of aluminium.
in ellingham diagram, what does the point of intersection of two lines signify??
Explain the role of and write the equations involved :
CO in purification of nickel
Iodine in refining of titanium
Iodine in refining of zirconium
Zinc in extraction of silver
name the common element present in the anode mud in electrolytic refining of copper.why are they so present?
Describe the roles of the following:
1. NaCN in the extraction of silver from a silver ore.
2. Iodine in the refining of titanium.
3. Cryolite in the metallurgy of aluminium.
what are the example of acidic and basic flux
what are limitations of Ellingham diagram?
write chemical equations involved in blast furnance ?
explain Mond process ???
Copper & silver are below hydrogen in electrochemical series & yet they are found in combined states as sulphides in nature . comment.
What is the
significance of leaching in the extraction of aluminium?
wht actually happens in zone refining?
What is the oxidation state of Fe and Cr in chromite ore ( FeCr2O4 ) ???????
Ans is +3 and +6 but how ....plz anybody plz explain ???????????
how to learn this lesson
The decomposition of Fe2O3 is a non-spontaneous process
2 Fe2O3 (S) → 4 Fe (S) + 3 O2 (g) âr GÙ = +1487 kJ mol-1
Show that the reduction of Fe2O3 by CO can be made spontaneous by coupling with the reaction :
2CO(g) + O2 (g) → 2 CO2 (g) âr GÙ = -514 kJ mol-1
Explain the role of NaCN in extraction of silver from silver ore??
Why is that only sulphide ores are concentrated by froth flotation?
What is the role of silica in the metallurgy of copper?
explain role:SiO2 in the extraction of copper
1. What is the difference between Hydrometallurgy and Pyrometallurgy?
2. what are the two aspects considered during reduction of metals?
what is the difference between reverberotory furnace and blastfurnace?
which is a better reducing agent at 673k?c and co why?
Why copper matte
is put in silica lined converter?
why magnesium oxide is used in blast furnace at the walls
i havent understood the basic concept and use of elingham diagram. plz.. explain it simply how to check whch one will be reduced and which one oxidised??
1) Mention the conditions to maximise the yield of ammonia by Haber's process
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