An orange solid A on heating gives colourless gas B the gas B is in dry condition is passed over - Chemistry - The p-Block Elements

Question

An orange solid A on heating gives colourless gas B the gas B is
in dry condition is passed over heated Ca to give a solid C the
solid C further reacts with water to produce gas D which forms a
blue coloured compund E on reaction with copper sulphate solution
identify A,B,C,D,and E

Ujjwal Peshin · Answer

The orange solid A is
(NH4)2Cr2O7

(NH4)2Cr2O7 on
heating gives N2(gas)+ 4H2O(l)+
Cr2O3(solid)

Gas B is N2

N2 reacts with 3Ca to give
Ca3N2(calcium nitride)
·
Solid C is
Ca3N2
·
Gas D is ammonia(NH3)

Ca3N2 reacts with 6 molecules of water
to give 2 molecules of ammonia and 3 molecules of calcium
hydroxide

· E
is a complex
[Cu(NH3)4]2+
Cu2+ ions present in
CuSO4 solution reacts with 4 molecules of
ammonia to give above complex

An orange solid A on heating gives colourless gas B.the gas B is in dry condition is passed over heated Ca to give a solid C.the solid C further reacts with water to produce gas D which forms a blue coloured compund E on reaction with copper sulphate solution. identify A,B,C,D,and E.