Q. 38

When a brown compound of manganese (A) is treated with HCl it gives a gas (B). The gas taken in excess, reacts with NH3 to give an explosive compound (C). Identify compounds A, B and C.

Answer :

When brown co pound of manganese (A) is treated with HCl it gives chlorine gas.


MnO2 + 4HCl MnCl2 + Cl2 +2H2O


(A) (B)


The chlorine gas reacts with NH3 to given NCl3


3Cl2 + NH3 NCl3 + 3HCl


(B) (C)


The brown compound A = MnO2


Gas B = Cl2


Explosive compound C= NCl3


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