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28 g of N2 and 6 g of H2 were kept at...

28 g of `N_2 ` and 6 g of `H_2` were kept at `400 ^(@) C ` in 1 litre vessel , the equilibrium mixture contained 27.54 g of `NH_3` The approximate value of `K_c` for the adove reaction can be ( in `" mol"^(-2) L^(-2))`

A

75

B

50

C

25

D

100

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A
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