CET Karnataka Medical CET - Karnataka Medical Solved Paper-2010

  • question_answer
    Carbon can reduce ferric oxide to iron at a temperature above 983 K because

    A)  carbon    monoxide    formed    is thermodynamically less stable than ferric oxide

    B)  carbon has a higher affinity towards oxidation than iron

    C)  free energy change for the formation of carbon dioxide is less negative than that for ferric oxide

    D)  iron has a higher affinity towards oxygen than carbon

    Correct Answer: B

    Solution :

    Above\[983\text{ }K\], free energy change for the formation of \[C{{O}_{2}}\] is more negative than that for ferric oxide. Thus, above this temperature, carbon has a higher affinity towards oxidation than iron.


You need to login to perform this action.
You will be redirected in 3 sec spinner