Discussion Forum

1)

Under ambient conditions  , the total number of gases released as products in the final step of the reaction scheme shown below is

Answer:

Option D

Explanation:

 Plan  This problem can be solved by using concept involved in chemical properties  of xenon oxide  and xenon fluoride

 XeF₄   on complete hydrolysis produce XeO₃

 XeO₃ on reaction with OH^- produces HXeO₄^- which on further treatment with OH^- undergo slow disproportionation  reaction and produces XeO₆^4-  along with Xe(g) , H₂O (l) and O₂ (g)  as a by-product

 OXidation half cell in basic aqueous solution

 $HXeO_4^-+5OH^{-}\rightarrow XeO_{6}^{4-}+3H_{2}O+2e$

 Reduction half-cell in basic aqueous solution

      $HXeO_4^-+3H_{2}O+6e^{-}\rightarrow Xe+7OH^{-}$

  Balanced  overall disproportionation reaction is

  $4HXeO_4^-+8OH^{-}\rightarrow 3XeO_6^{4-}+Xe+6H_{2}O$

                                                       2 products

 Complete sequence of reaction can be shown as

$XeF_{6}+3H_{2}O\rightarrow XeO_{3}+3H_{2}F_{2}$  $\underrightarrow{OH^{-}}$  $HXeO_4^-$

   $\underrightarrow{OH^{-}/H_{2}O (disproportionation)}XeO^{4-}_{6}(s)+Xe(g)+H_{2}O(l)+O_{2}(g)$