On heating compound (A) gives a gas (B) which is a constituent of air. This gas when treated with H2 in the presence of a catalyst gives another gas (C) which is basic in nature. (A) should not be : (1) (NH4)2Cr2O7 (2) NH4NO2 (3) Pb(NO3)2 (4) NaN3

Correct answer: (3) Pb(NO3)2 Explanation: (1) Pb(NO3)2 + Δ → PbO + 2NO2 (2) NH4NO2 + Δ → N2 + 2H2O (3) (NH4)2Cr2O7 + Δ → N2 + Cr2O7 + H2O (4) NaN3 + 300°C → 3N2 + 2Na

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On heating compound (A) gives a gas (B) which is a constituent of air. This gas when treated with H2 in the presence of a catalyst

Chemistry

Last Post by nikhil04 5 years ago

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16/09/2020 6:44 pm

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aditi07

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On heating compound (A) gives a gas (B) which is a constituent of air. This gas when treated with H₂ in the presence of a catalyst gives another gas (C) which is basic in nature. (A) should not be :

(1) (NH₄)₂Cr₂O₇

(2) NH₄NO₂

(3) Pb(NO₃)₂

(4) NaN₃

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16/09/2020 8:16 pm

nikhil04

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Correct answer: (3) Pb(NO₃)₂

Explanation:

(1) Pb(NO₃)₂+ Δ → PbO + 2NO₂

(2) NH₄NO₂+ Δ → N₂ + 2H₂O

(3) (NH₄)₂Cr₂O₇+ Δ → N₂ + Cr₂O₇ + H₂O

(4) NaN₃+ 300°C → 3N₂ + 2Na

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