Advertisements
Advertisements
प्रश्न
Below point ‘A’ \[\ce{FeO}\] can ______.
पर्याय
be reduced by carbon monoxide only.
be reduced by both carbon monoxide and carbon.
be reduced by carbon only.
not be reduced by both carbon and carbon monoxide.
Advertisements
उत्तर
Below point ‘A’ \[\ce{FeO}\] can be reduced by carbon monoxide only.
Explanation:
Below the point A, Gibbs free energy change for the formation of \[\ce{CO2}\] from \[\ce{CO}\] has lower value than Gibb's free energy change for the formation of \[\ce{FeO}\]. \[\ce{ΔG_{(Fe, FeO)}}\].
APPEARS IN
संबंधित प्रश्न
How is ‘cast iron’ different from ‘pig iron’?
Is it true that under certain conditions, Mg can reduce SiO2 and Si can reduce MgO? What are those conditions?
Write down the reactions taking place in different zones in the blast furnace during the extraction of iron.
The choice of a reducing agent in a particular case depends on thermodynamic factor. How far do you agree with this statement? Support your opinion with two examples.
Write chemical reactions taking place in the extraction of copper from Cu2 S.
In the extraction of copper from its sulphide ore, the metal is formed by the reduction of \[\ce{Cu2O}\] with ______.
For the reduction of \[\ce{FeO}\] at the temperature corresponding to point D, which of the following statements is correct?
How is copper extracted from low grade copper ores?
The purest form of iron is prepared by oxidising impurities from cast iron in a reverberatory furnace. Which iron ore is used to line the furnace? Explain by giving reaction.
Why is sulphide ore of copper heated in a furnace after mixing with silica?
Write down the reactions taking place in Blast furnace related to the metallurgy of iron in the temperature range 500-800 K.
Explain the following:
\[\ce{CO2}\] is a better reducing agent below 710 K whereas \[\ce{CO}\] is a better reducing agent above 710 K.
Explain the following:
Generally sulphide ores are converted into oxides before reduction.
Explain the following:
Carbon and hydrogen are not used as reducing agents at high temperatures.
Heating of MgCl2 6H2O in absence of HCl gives ______.
\[\ce{Au + CN^- + H2O + O2 -> [Au(CN)2]^- + OH^-}\]
The number of CN− ions involved in the balanced equation is ______.
