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For which one of the following equations...

For which one of the following equations `DeltaH_(r)^(@)` equal to `DeltaH_(f)^(@)` for the product ?

A

`2CO(g) + O_(2)(g) rarr 2CO_(2)(g)`

B

`N_(2)(g) + O_(3)(g) rarr N_(2)O_(3)(g)`

C

`CH_(4)(g) + 2Cl_(2)(g) rarr CH_(2)Cl_(2)(l) + 2HCl(g)`

D

`Xe(g) + 2F_(2)(g) rarr XeF_(4)(g)`

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The correct Answer is:
A, B, C
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