On the basis of the following Eo Values, the strongest oxidising agent is
[Fe(CN)6]4-
Fe2+
Fe3+
[Fe(CN)6]3-
Standard electrode potentials are
Fe2+ / Fe, Eo = - 0.44 V
Fe3+ / Fe2+ , Eo = 0.77 V
Fe2+, Fe3+ and Fe block are kept together, then
Fe3+ increases
Fe3+ decreases
Fe2+/Fe3+ remains unchanged
Fe2+ decreases
The equivalent conductance of Ba2+ and Cl- are 127 and 76 ohm-1 cm-1 eq-1 respectively at infinite dilution. The equivalent conductance of BaCl2 at infinite dilution will be
139.52
203
279
101.5
The equivalent conductance of M/32 solution of a weak monobasic acid is 8.0 mho cm2 and at infinite dilution is 400 mho cm2. The dissociation constant of this acid is
1.25 × 10-5
1.25 × 10-6
6.25 × 10-4
1.25 × 10-4
If the standard electrode potential is ___________, then hydrogen gas is more stable than the reduced form of the species.
Zero
Less than zero
Unity
Greater than zero
_________ is the equilibrium constant of the reaction Cu(s) + 2Ag+(aq) → Cu2+(aq) + 2Ag (s), whose Eocell = 0.46.∨
3.92 × 1015
3.29 × 1013
3.92 × 1011
3.29 × 1011
The most convenient method to protect the bottom of the ship made of iron is
Coating it with red lead oxide
White tin plating
Connecting it with Mg block
Connecting it with Pb block
Which one of the following pairs of substances on reaction will not evolve H2 gas?
Iron and H2SO4 (aqueous)
Iron and Steam
Copper and HCl (aqueous)
Sodium and Ethyl alcohol
On heating one end of a piece of a metal, the other end becomes hot because of
Energised electrons moving to the other end
Resistance of the metal
Mobility of atoms in the metal
Minor perturbation cell in the energy of atoms .
4.5 g of aluminium (at. mass 27 u) is deposited at cathode from Al3+ solution by a certain quantity of electric charge. The volume of hydrogen produced at STP from H+ ions in solution by the same quantity of electric charge will be
44.8 L
22.4 L
11.2 L
5.6 L
