On heating, `(NH_(3))_(2)Cr_(2)O_(7)` gives rise to a gas which on treatment with Mg ribbon gives a white solid. On dissolving white solid in water another gas (X) is evolved. It gives white fumes when a rod dipped in conc. HCl is brought in its contact. Identify the gas X.

On heating, `(NH_(3))_(2)Cr_(2)O_(7)` gives rise to a gas which on tre

1.	On heating, `(NH_(3))_(2)Cr_(2)O_(7)` gives rise to a gas which on treatment with Mg ribbon gives a white solid. On dissolving white solid in water another gas (X) is evolved. It gives white fumes when a rod dipped in conc. HCl is brought in its contact. Identify the gas X.
Answer» The available information suggests that the gas (X) is ammonia. The chemical reactions involved are as follows : `(NH_(4))_(2)Cr_(2)O_(7) overset("heat")to Cr_(2)O_(3)+N_(2)4H_(2)O` `3Mg+N_(2)to Mg_(3)N_(2)` ` Mg_(3)N_(2)+6H_(2)O to 3Mg(OH)_(2)+underset("White fumes with HCl")underset((X))(2NH_(3))`

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On heating, `(NH_(3))_(2)Cr_(2)O_(7)` gives rise to a gas which on treatment with Mg ribbon gives a white solid. On dissolving white solid in water another gas (X) is evolved. It gives white fumes when a rod dipped in conc. HCl is brought in its contact. Identify the gas X.

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