1.

The thermal decomposition of N_(2)O_(5) occues as: 2N_(2)O_(5) rarr 4NO_(2)+O_(2) Experimental studies suggest that rate of decomposition of N_(2)O_(5) rate of formation of NO_(2) or rate of formation of O_(2) all becomes double if concentration of N_(2)O_(5) is doubled. The correct mechanism for decomposition of N_(2)O_(5) is:

Answer»

`N_(2)O_(5) overset(slow)rarr NO_(2)+NO_(3)`
`N_(2)O_(5)+NO_(3) overset(fast)rarr 3NO_(2)+O_(2)`
`N_(2)O_(5) overset(fast)rarr NO_(2)+NO_(3)`
`N_(2)O_(5)+NO_(3) overset(slow)rarr 3NO_(2)+O_(2)`
`N_(2)O_(5) overset(fast)rarr 2NO_(2)+1/2O_(2)`
`N_(2)O_(5) overset(slow)rarr NO+NO_(2)+2O_(2)`
`N_(2)O_(5)+NO_(2)overset(fast)rarr 3NO_(2)+1/2O_(2)`

Answer :A


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