2. Solved Papers
  3. JEE Main & Advanced

JEE Main & Advanced JEE Main Solved Paper-2017

  • question_answer
    Given \[E_{Cl{{  }_{2}}/C{{l}^{-}}}^{0}=13.6,E_{C{{r}^{3+}}/Cr}^{0}=-0.74\,V\] \[E_{C{{r}_{2}}O_{7}^{2-}/C{{r}^{3+}}}^{0}=1.33V,E_{MnO_{4}^{-}/M{{n}^{2+}}}^{0}=1.51\,V.\] Among the following, the strongest reducing agent is                               JEE Main Solved Paper-2017

    A)  Cr                                          

    B) \[M{{n}^{2+}}\]

    C) \[C{{r}^{3+}}\]                  

    D) \[C{{l}^{-}}\]

    Correct Answer: A

    Solution :

     \[E_{MnO_{4}^{-}/M{{n}^{+2}}}^{0}=1.51\,V\]                 ?(i)                 \[E_{C{{l}_{2}}/C{{l}^{-}}}^{0}=1.36\,V\]                                ..(ii)                 \[E_{C{{r}_{2}}O_{7}^{-2}/C{{r}^{+3}}}^{0}=1.33\,V\]                      ?(iii)                 \[E_{C{{r}^{+3}}/Cr}^{0}=-0.74\]                               ..(iv)                 Since \[\text{C}{{\text{r}}^{\text{+3}}}\]is having least reducing potential,           so Cr is the best Reducing agent.


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