Q .     Given that `N_2(g) +3H_2(g) \rightarrow 2NH_3(g); \Delta_rH^{}=-92kJ`, the standard molar enthalpy of formation in `KJ\, mol^{-1} ` of `NH_3(g)` is :

EAMCET 2016
A

-92

B

+46

C

+92

D

-46

0
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