Addition of sodium thiosulphate solution to a solution of silver nitrate gives X as white precipitate, insoluble in water but soluble in excess thiosulphate solution to give Y. On boiling in water, Y gives Z. X, Y and Z respectively are
Ag2S2O3, Na3[Ag(S2O3)2], Ag2S
Ag2SO4, Na[Ag(S2O3)2], Ag2S2
Ag2S2O3, Na5[Ag(S2O3)3], AgS
Ag2SO3, Na3[Ag(S2O3)2], Ag2O
Optical isomerism is exhibited by (ox= oxalate anion; en= ethylenediamine).
cis-[CrCl2(ox)2]3-
[Co(en)3]3+
trans-[CrCl2(ox)2]3-
[Co(ox) (en)2]+
Extraction of gold (Au) involves the formation of complex ions X and Y.
Gold ore HO- + X Y + Au
X and Y respectively are
AuCN and Zn(CN)
Au(CN) and Zn(CN)
Au(CN)
Au(CN)
A.
AuCN
Extraction of gold (Au) involves the following sequence of reaction,
Gold ore
Hence, X = Au(CN)
Sulphuryl chloride (SO2Cl2) reacts with white phosphorus (P4) to give
PCl5, SO2
OPCl3, SOCl2
PCl5, SO2, S2Cl2
OPCl3, SO2, S2Cl2
In the following compound, the number of sp-hybridised carbons are
CH2 = C = CH - CN(CH) - C ≡ CH
2
3
4
5
For the reaction A + 2B → C, the reaction rate is doubled, if the concentration of A is doubled. The rate is increased by four times when concentrations of both A and B are increased by four times. The order of the reaction is
3
0
1
2
Suppose the mass of a single Ag-atom is m. Ag metal crystallises in fcc lattice with unit cell of length a. The density of Ag metal in terms of a and 'm' is
At a particular temperature, the ratio of equivalent conductance to specific conductance of a 0.01 N NaCl solution is
105 cm3
103 cm3
10 cm3
105 cm2