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CET Karnataka Engineering CET - Karnataka Engineering Solved Paper-2008

  • question_answer
    When compared to \[\Delta {{G}^{o}}\] for the formation of \[A{{l}_{2}}{{O}_{3}}\], the \[\Delta {{G}^{o}}\] for the formation of \[C{{r}_{2}}{{O}_{3}}\] is

    A)  higher                                 

    B)  lower

    C)  same                                   

    D)  unpredicted

    Correct Answer: A

    Solution :

    Between \[A{{l}_{2}}{{O}_{3}}\] and \[C{{r}_{2}}{{O}_{3}},\,\,A{{l}_{2}}{{O}_{3}}\] is more stable, so its ease of formation is high i.e. \[\Delta {{G}^{o}}\] is negative or less than that of \[A{{l}_{2}}{{O}_{3}}\]. Hence, \[\Delta {{G}^{o}}\] of \[C{{r}_{2}}{{O}_{3}}>\Delta {{G}^{o}}\] of \[A{{l}_{2}}{{O}_{3}}\]


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