Advertisements
Advertisements
प्रश्न
Reduction of metal oxide to metal becomes easier if the metal obtained is in liquid state. Why?
Advertisements
उत्तर
Entropy of a metal in the liquid state is higher than that of the same metal in the solid state (Sliquid > Ssolid). So, when the metal formed is in the liquid state and the metal oxide being reduced is in the solid state, the value of entropy change (ΔS) for the reduction reaction is more on the positive side. When the value of TΔS increases and that of ΔH remains the same, the value of ΔGr° for the reduction reaction becomes negative and thus reduction becomes easier.
APPEARS IN
संबंधित प्रश्न
Explain calcination with reactions.
Define Hydrometallurgy?
What is the process in which concentrated ore is reduced to the corresponding metal by heating at high temperature with a reducing agent?
(a) Polling
(b) Pyrometallurgy
(c) Hydrometallurgy
(d) Calcination
Which solution is used for the leaching of silver metal in the presence of air in the metallurgy of silver?
What is the role of zinc metal in the extraction of silver ?
Name the processes from which chlorine is obtained as a by-product.
Which one of the following oxidation state of Manganese is unstable?
(a) + 2
(b) + 4
(c) + 5
(d) + 7
Account for the following :
Reducing character decreases from SO2 to TeO2.
Which metal is also found in sea beds?
Which of the following reactions is an example of autoreduction?
