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Reaction stoichiometry, kinetics and thermodynamics ltbgt Nitrosyl chloride `(NOCl)`, is a yellow gas that is most commonly encountered as a decomposition product of aqua regia. It is toxic and irritating to the lungs. On heating `NOCl` decomposes as `2NOClrarr2NO+Cl_(2)`. The enthalpy change `(DeltaH)` for the formation of `1` mole of `Cl_(2)` by the decomposition of `NOCl` is `75.3KJ` between `100.K "to" 600K`. The standard entropies `(S^(@)_(298K))` of different species are as given below: `{:("Substance",NOCl,NO,Cl_(2)),(S_(298K)^(@),264,211,223):}` Calculate the temperature above which the reaction will become spontaneous.

Answer» Correct Answer - For spontaneous Reachtion,`DeltaG^(@)lt0`
`therefore75300-Txx117lt0 thereforeTgt645.6K`


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