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3 moles of NH3 are allowed to dissociate...

3 moles of `NH_3` are allowed to dissociate in a 5 litre vessel and the equilibrium concentration of `N_2` is 0.2 mole/lit . Then the total number of moles at equilibrium is

A

2.5

B

5

C

1.5

D

7.5

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The correct Answer is:
B
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