Solved papers for JEE Main & Advanced JEE Main Paper (Held On 25 April 2013)
done JEE Main Paper (Held On 25 April 2013) Total Questions - 2
question_answer1) Given that : (i) \[{{\Delta }_{f}}{{H}^{0}}\]of\[{{N}_{2}}O\] is \[82\operatorname{k}\operatorname{j}\]\[\operatorname{mo}{{\operatorname{l}}^{-1}}\] (ii) Bond energies of N\[\equiv \]N, N=N, O=O and N=O are 946,418,498 and 607 Kj\[{{\operatorname{mol}}^{-1}}\] respectively. The resonance energy of \[{{N}_{2}}\] O is
JEE Main Online Paper ( Held On 25 April 2013 )
question_answer2) The Gibbs energy for the decomposition of\[A{{l}_{2}}{{O}_{3}}\]at \[{{500}^{0}}C\] is as follows: \[\frac{2}{3}A{{l}_{2}}{{O}_{3}}\to 4/3Al+{{O}_{2}},{{\Delta }_{r}}G=+940\,kJ\,mo{{l}^{-1}}\] The potential difference needed for the electrolytic reduction of aluminium oxide at\[{{500}^{0}}C\] should be atleast:
JEE Main Online Paper ( Held On 25 April 2013 )