Advertisements
Advertisements
Question
Out of C and CO, which is a better reducing agent at 673 K?
Advertisements
Solution
Out of C and CO, CO is a better reducing agent at 673 K. This can be explained as follows.
The CO, CO2 curve slopes upward in the Ellingham diagram, while the C, CO2 curve is nearly flat. At 673 K, the two curves intersect. Lower than 673 K, the response \[\ce{C_{(s)} + O2_{(g)} -> CO2_{(g)}}\] is energetically less favourable due to a lesser negative value of ΔfG° as compared to that for the reaction \[\ce{2CO_{(g)} + O2_{(g)} -> 2CO2_{(g)}}\] which has a more negative value. Therefore, below 673 K, CO acts as a better reducing agent.
RELATED QUESTIONS
Giving examples, differentiate between ‘roasting’ and ‘calcination’.
Why copper matte is put in silica lined converter?
The metal oxide which cannot be reduced to metal by carbon is ____________.
Which one of the following is not feasible
Flux is a substance which is used to convert
Zinc is obtained from ZnO by ____________.
Explain the following term with a suitable example.
Gangue
Explain the following term with a suitable example.
Slag
Which reagents are required for one step conversion of chlorobenzene to toluene?
At the temperature corresponding to which of the points in figure, FeO will be reduced to Fe by coupling the reaction \[\ce{2FeO -> 2Fe + O2}\] with all of the following reactions?
(a) \[\ce{C + O2 -> CO2}\]
(b) \[\ce{2C + O2 -> 2CO}\]
(c) \[\ce{2CO + O2 -> 2CO2}\]
(i) Point A
(ii) Point B
(iii) Point D
(iv) Point E
CN– solution is used in the extraction of which metal?
Sulphide ore of the metal are usually concentrated by froth floatation process. Which of the following sulphide ore offers an exception and is concentrated by chemical leaching?
Heating pyrites to remove sulphur is called ______.
