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Consider the reaction, 4NO(2)(g)+O(2)(...

Consider the reaction,
`4NO_(2)(g)+O_(2)(g)rarr2N_(2)O_(5)(g),Delta_(r )H=-111 kJ.` If `N_(2)O_(5)(s)` is formed instead of `N_(2)O_(5)(g)` in the above reaction, the `Delta_(r )H` value will be
(Given, `DeltaH` of sublimation for `N_(2)O_(5)` is `54 kJ mol^(-1))`

A

`+54 KJ`

B

`+219` KJ

C

`-219` KJ

D

`-165` KJ

Text Solution

Verified by Experts

The correct Answer is:
C
`4NO_(2)(g)+O_(2)(g) rarr 2N_(2)O_(5)(g), DeltaH =-1364 KJ`

`-111-54 = DeltaH'`
`DeltaH' =-165 KJ`
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