Which one of the following reactions of Xenon compounds is not feasible?

• Xenon is a noble gas having atomic number 54 . The commonly known fluorides of xenon are ${\mathrm{XeF}}_2,{\mathrm{XeF}}_4$ and ${\mathrm{XeF}}_6$ and its respective oxides are ${\mathrm{XeO}}_2,{\mathrm{XeO}}_3$ and ${\mathrm{XeO}}_4$. 
• Xenon fluorides can easily hydrolyze to give xenon oxide but it’s impossible to yield xenon fluorides from the hydrolysis of xenon oxides because xenon fluorides will again reverse the reaction to form xenon oxides. 

$\text{ Hence, the reaction, }{\mathrm{XeO}}_3+6\mathrm{HF}\to {\mathrm{XeF}}_6+3{\mathrm{H}}_2\mathrm{O}\text{ is not feasible. }$