Which of the following reaction in the blast furnace is/are endothermic?

Chemistry · JEE Advanced · NTA Exams — General Principles and Processes of Isolation of Elements

1. \(\mathrm{C}(\mathrm{~s})+\mathrm{O}_{2}(\mathrm{~g}) \rightleftharpoons \mathrm{CO}_{2}(\mathrm{~g})\)
2. \(\mathrm{CO}_{2}(\mathrm{~g})+\mathrm{C}(\mathrm{~s}) \rightleftharpoons 2 \mathrm{CO}(\mathrm{~g})\)
3. \(\mathrm{CaCO}_{3}(\mathrm{~s}) \rightleftharpoons \mathrm{CaO}(\mathrm{~s})+\mathrm{CO}_{2}(\mathrm{~g})\)
4. \(\mathrm{Fe}_{2} \mathrm{O}_{3}(\mathrm{~s})+3 \mathrm{CO}(\mathrm{~g}) \rightleftharpoons 2 \mathrm{Fe}(\mathrm{l})+3 \mathrm{CO}_{2}(\mathrm{~g})\)

Answer

(B) CO _ 2 ( ~g )+ C ( ~s ) 2 CO ( ~g ), (C) CaCO _ 3 ( ~s ) CaO ( ~s )+ CO _ 2 ( ~g )

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