The order of solubility of lithium halides in non-polar solvents follows the order:
LiI > LiBr > LiCl > LiF
LiF > LiI > LiBr > LiCl
LiCl > LiF > LiI > LiBr
Which of the following is used as a source of oxygen in space capsules , submarines and breathing masks?
Li2O
Na2O2
KO2
K2O2
Which of the following is not a cumulated diene?
Hexa - 2 , 3 - diene
Penta - 1 , 3 - diene
Hexa - 1 , 2 - diene
Penta - 2 , 3 - diene
The standard reduction potentials of half reactions are given below:
F2 (g) + 2e- 2F- (aq) ; E0 = + 2.85 V
Cl2 (g) + 2e- 2Cl- (aq) ; E0 = + 1.36 V
Br2 (g) + 2e- 2Br- (aq) ; E0 = + 1.06 V
I2 (g) + 2e- 2I- (aq) ; E0 = + 0.53 V
The strongest oxidising and reducing agents respectively are:
chlorine and iodine
fluorine and iodine ion
chloride and bromine
bromine and iodine
B.
fluorine and iodine ion
Higher the reduction potential, more easily it is reduced and so, better oxidising agent it is. Hence, F2 is strongest oxidising agent and I- ion is the strongest reducing agent.
A compound CuCl has face-centred cubic structure. Its density is 3.4 g cm-3 , The length of unit cell is:
8.734
5.834
5.783
8.153
One of the following metals forms a volatile compound and this property is taken advantage for its extraction. This metal is:
iron
nickel
cobalt
tungsten
Intramolecular hydrogen bonding is present is:
nickel dimethyl glyoximate
anti-pyridine-2-carboxaldoxime
maleic acid monoanion
All of the above
Equivalent conductance of O .0128 N acetic acid solution, at 25°C is 14 ohm-1 eq-1 and at infinite dilution is 391 ohm-1eq-1 .The degree of dissociation of acetic acid in the solution and its dissociation constant, respectively are:
0.036 and 1.66x10-5
0.121 and 1.78x10-4
0 .213 and 1.84x10-5
O .054 and 1.94x10-4
Ag | AgCl | Cl- (C2) || Cl- (C1) | AgCl | Ag for this cell G is negative if:
C1 = C2
C1 > C2
C2 > C1
both (a) and (b)