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Black (A)+H(2)SO(4)to (B)"gas"+( C) (B...

Black `(A)+H_(2)SO_(4)to (B)"gas"+( C)`
`(B)+(CH_(3)COO)_(2) Pb to (D)` black ppt.
`( C)+K_(3)[Fe(CN)_(6)] to (E)` blue.
`( C)` also decolourilses acidified `KMnO_(4)`.Identify `(A)` to `(E)`

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`FeS+H_(2)SO_(4) to H_(2)S +FeSO_(4)`
`H_(2)S +(CH_(3)COO)_(2)Pb to PbS("black ppt.")+2CH_(3)COOH`
`Fe^(2+) + K_(3)[Fe(CN)_(6)]^(3-) to KFe^(II)[Fe^(III)(CN)_(6)]`Turnbull's blue.
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K_(4)[Fe(CN)_(6)]+2CuSO_(4)toCu_(2)[Fe(CN)_(6)]darr+2K_(2) SO_(4)

Light green solution of (A) does not give blue coloured ppt . With K_(4)[Fe(CN)_(4)] but on adding a drop of HNO_(3) blue ppt .(B) appears .However (A) gives blue colour (C ) with K_(4)[Fe(CN)_(6)] Identify (A) if it, also gives white ppt with AgNO 3 ​ solution?

An organic compound (A) (C_(5)H_(7)OCl) reacts rapidly with ethanol to give (B) (C_(7)H_(12)O_(2)) . (A) also reacts with water to produce an acid which reacts with bromine to give (C ) (C_(5)H_(8)Br_(2)O_(2)) . (B) on boiling with H_(2)SO_(4) forms an acid (D). When (D) is oxidised with KMnO_(4) an acid (E ) (C_(4)H_(6)O_(3)) is produced. On mild heating, (E ) gives (F) (C_(3)H_(6)O) which cannot be oxidised by ammoniacal AgNO_(3) . Identify the compounds (A) to (F).

X_(2)S_(n)+water to X(OH)_(n) darr+ underset((Gas))(Y uarr)overset(Pb(CH_(3)COO)_(2))tounderset(("Black ppt."))(Z darr) Then (X) cation can not be:

X_(2)S_(n)+water to X(OH)_(n) darr+ underset((Gas))(Y uarr)overset(Pb(CH_(3)COO)_(2))tounderset(("Black ppt."))(Z darr) Then (X) cation can not be:

Assertion: Acidified [Cu(NH_(3))_(4)]^(2+) and [Cu(H_(2)O)_(4)]^(2+) both react with K_(4)[Fe(CN)_(6)] to give brown ppt. Reason: both complexes are blue in colour of little different shade.

a.(A) + KBr rarr yellow ppt . (B) (A) + "conc". H_(2)SO_(4) overset(Delta) to brown vapours intensifield with cu- turnings. (B) dissolves in lypo forming a soluble complex (C ) what are (A),(B) and (C ) and explain their reactions ? b. SO_(3)^(2-) and SO_(4)^(2-) both give while ppt with BaCI_(2) solution .How is SO_(3)^(2-) detected in presence of SO_(4)^(2-) ? c. Na_(2)B_(4)O_(7).10 H_(2)O + "conc". H_(2)SO_(4) overset(Delta) to (A) overset(CH_(2)OH Delta) to (B) idenity (A) and (B) d. (A) + dii H_(2)SO_(4) overset(Delta) to gas (B) Gas (B) turns K_(2)Cr_(2)O_(7) //H^(Theta) solution green Aq solution of (A) + BaCI_(2) rarr while ppt .(C ) Filltrate after removing (C) + Br_(2) water rarr while ppt dissolve in qammon ium acetate solution Example.

Which would exhibit ionisation isomerism (a) [Co(NH_(3))_(6)][(C_(2)O_(4))_(3)] (b) [Co(NH_(3))_(5)Br]^(2+)SO_(4)^(2-) (c ) K_(3)[Fe(CN)_(6)] (d) K_(3)[Fe(C_(2)O_(4))_(3)] .

Match the Following : {:(" Column I"," Column II"),(" (Addition of dil. HCl/dil "H_(2)SO_(4)")"," (Observation)"),("(A) "S_(2)O_(3)^(2-),"(p) Gas evolved turns lime water milky"),("(B) "SO_(3)^(2-),"(q) Gas turns lead acetate paper black"),("(C) "CO_(3)^(2-),"(r) Gas turns acidified "K_(2)Cr_(2)O_(7)" solution green"),("(D) "S^(2-),"(s) Gives white turbidity"):}

K_(4)[Fe(CN)_(6)]+2ZnSO_(4) to Zn_(2)[Fe(CN)_(6)]darr+2K_(2)SO_(4)

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