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Lalita Sahil Banik
Asked: 2022-11-10T11:59:32+05:30 In:

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 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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  1. 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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