For per gram of reactant, the maximum quantity of N2 gas is produced in which of the following thermal decomposition reactions ? (Given : Atomic wt. - Cr = 52 u, Ba = 137 u)

Question

For per gram of reactant, the maximum quantity of N₂ gas is produced in which of the following thermal decomposition reactions ?
(Given : Atomic wt. - Cr = 52 u, Ba = 137 u)

(NH₄)₂Cr₂O₇(s) $ \to $ N₂(g) + 4H₂O(g) + Cr₂O₃(s)

2NH₄NO₃(s) $ \to $ 2 N₂(g) + 4H₂O(g) + O₂(g)

Ba(N₃)₂(s) $ \to $ Ba(s) + 3N₂(g)

2NH₃(g) $ \to $ N₂(g) + 3H₂(g)

Solution

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