Ino1

Q1 a,c,d all reasons told by avik

@avik C it decomposes to CuO . why did u say C is false???

kk

thx both of u .....
@tush 0.880 means concentration ??

Q.2) Ans. are c) and d) precisely.

AgCl is a colourless salt soluble even in dil.NH₃.

AgCl + NH₄OH → Ag [(NH₃)₂] Cl + H₂O

Similarly AgBr is soluble in conc. NH₃ solution.

But, AgI and Ag₂S are insoluble in NH₃ solution

This is a test to distinguish AgI from the other two halides.

Well, it can't be (a) , (b) bcoz Ag Cl and Ag Br when dissolved in ammonia, they form the ammine complex [H₃N → Ag → NH₃] ⁺ , which is linear.

AgBr dissolves in 0.880 ammonia , but AgI is insoluble in 0.880 ammonia.

So ans should be (c), (d)

i told naa...Q2 is more than one correct

[11] Dunno why did i write tht....!!! Chalo edited....thnx rick..[1]

@ avik good solution

Q1 a,c,d all reasons told by avik

@ C it decomposes to CuO . why did u say C is false???

ans =a,c,d

Q1) a)-True ...(Refer Benedict sol.n frm organic whch reduces Cu ²⁺ to red Cu₂O)

b)-False (Gives CuCl₂)

c)-True [Edited] (It will decompose to give CuO only)

d)-True (1st forms CuI₂ which disproportionates due to unstabilty giving Cu₂I₂ & I₂ gas...This excess I₂ dissolves in KI to give a brown sol.n of KI₃)

AgCl is soluble in NH₃ solution(NH₄OH)
In aqueous solution of ammonia it gives the following reaction:
AgCl + 2NH₄OH → Ag(NH₃)₂Cl + 2H₂O
The complex salt diamine silver chloride formed is soluble and hence AgCl is soluble in NH₄OH.

????

I am intrested in reasons more than answer

q2) a is soluble in ammonia and b is partially soluble and c,and d is not soluble in ammonia

ans2 c is rite....but its more than one correct