Ino2

ans 1> a
ans 2> c,d

kkk.....well for me the basic things in inorganic too are difficult..i just done like this topic

1)a & c......
Waise, does ClO₄^2- exist ? If it were ClO₄^- ,it won't show disproportionation as then Cl will be in its highest Oxid.n state, but ClO₄^2- might show...Cl₂ & NO₂ will disproportionate fr sure....

Oh,.. i just talked about Ag & Hg in ur other thread, Decompose them if u can.... :P

Q.1) a) Cl₂ + OH^-( cold and dil. ) → Cl^- + ClO^-

Cl₂ + OH^-( hot and conc.. ) → Cl^- + ClO₃^-

b) 3 K₂MnO₄ + 2 H₂O → 2 KMnO₄ + MnO₂ + 4 KOH

d) ClO₄^2- → ClO₄^- + ClO₂.

SO , ANS. IS A,B, D

NO₂ disproportionateis in acidic medium

the disproportionation takes place for N₂O₄ as :

N₂O₄ + H₂O \leftrightarrow HNO₂ + HNO₃

HNO₂ and HNO₃ are very strong acids. thus, if medium is alkaline, then further reaction might take place.

note: another way to think. the reaction is also :

N₂O₄ → NO⁺ + NO₃^-

and its a acid - base reaction , where NO⁺ are acids and NO₃^- are bases. thus, this reaction is independent of the medium used .

and in 'd' , the bases are involved, though not strong; but still the medium should be basic / alkaline.