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plz explain the ellingham diagram more clearly with examples as it is not clear
n-factor of k2cr2o7 in acidic med?
what is the role of Depressant in froth floatation method.
principle of froth floatation ?
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???
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
are sols of metals hydrophillic or hydrophobic.please explain.
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
Zone refining (ii) Column chromatography.
what is the role of graphite rod in the electrometallurgy of aluminium???
why pine oil is added in froth floatation method?
which sulphide ore is concentrated by leaching and not by froth floatation and why?
what are froth stabilizers?
WHAT IS VAN ARKEL METHOD FOR REFINING ZIRCONIUM OR TITANIUM??? PLZZZ ANSER IT ...........
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?
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 ?
11) One gram of Na3AsO4 is boiled with excess of solid KI in presence of strong HCI. The iodine evolved is absorbed in KI solution and titrated against 0.2 N hypo solution. Assuming the reaction to be AsO43-+2H+2I→AsO33-+H2O+I2
calculate the volume of hypo consumed [Atomic weight of As = 75]
(A) 48.1 mL
(B) 38.4 mL
(C) 24.7 mL
(D) 30.3 mL
how is wrought iron different from steel???
What is the oxidation state of Fe and Cr in chromite ore ( FeCr2O4 ) ???????
Ans is +3 and +6 but how ....plz anybody plz explain ???????????
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.
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.
what is the principle of leaching ?
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 limitations of Ellingham diagram?
write chemical equations involved in blast furnance ?
what does reciprocal of gold number indicates???
explain Mond process ???
What is the
significance of leaching in the extraction of aluminium?
how many 72 degrees and 90 degrees angle are there in IF7 ????
what are the example of acidic and basic flux
Explain the role of NaCN in extraction of silver from silver ore??
What is the role of silica in the metallurgy of copper?
explain role:SiO2 in the extraction of copper
Although carbon and hydrogen are better reducing agents they are not used to reduce metal oxides at high temperatures. Why?
The role of --- Pine oil in froth floatation process ??
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??
In the Ellingham Diagram, the slope of the Metals/MetalOxides become more positive after Boiling Point, and thus dG increases,But we know after boiling point, the metal(oxide) becomes liquid/gas and thus its dS values becomes more positive, as dS and T are also increasing as a result T.dS should also increase. As a result from the equation-dG = dH - TdS dG should become more negative, it means the value of dG should decrease and the slope of the line should go downwards, but why is it going upward in the Ellingham diagram? I tried finding this on net, in many books, but didn't find the answer...can anyone/any teacher help me please!?
In the Ellingham Diagram, the slope of the Metals/MetalOxides become more positive after Boiling Point, and thus dG increases,
But we know after boiling point, the metal(oxide) becomes liquid/gas and thus its dS values becomes more positive, as dS and T are also increasing as a result T.dS should also increase. As a result from the equation-
dG = dH - TdS
dG should become more negative, it means the value of dG should decrease and the slope of the line should go downwards, but why is it going upward in the Ellingham diagram?
I tried finding this on net, in many books, but didn't find the answer...can anyone/any teacher help me please!?
1) Mention the conditions to maximise the yield of ammonia by Haber's process
1. Which of the two scraps, zinc or iron would be preffered for the recoveryof copper from leaCHED copper ore and why?
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