1
AIEEE 2005
+4
-1
Electrolyte: KCl KNO3 HCl NaOAc NaCl
$${ \wedge ^\infty }(Sc{m^2}mo{l^{ - 1}}):$$
149.9 145 426.2 91 126.5
Calculate $$\wedge _{HOAc}^\infty$$ Using appropriate molar conductances of the electrolytes listed above at infinite dilution in H2O at 25oC
A
517.2
B
552.7
C
390.7
D
217.5
2
AIEEE 2004
+4
-1
In a hydrogen – oxygen fuel cell, combustion of hydrogen occurs to :
A
generate heat
B
remove adsorbed oxygen from electrode surfaces
C
produce high purity water
D
create potential difference between the two electrodes
3
AIEEE 2004
+4
-1
Consider the following Eo values

$$E_{F{e^{3 + }}/F{e^{2 + }}}^o$$ = 0.77 V;

$$E_{S{n^{2 + }}/S{n}}^o$$ = -0.14 V

Under standard conditions the potential for the reaction

Sn(s) + 2Fe3+(aq) $$\to$$ 2Fe2+(aq) + Sn2+(aq) is :
A
1.68 V
B
0.63 V
C
0.91 V
D
1.40 V
4
AIEEE 2004
+4
-1
The standard e.m.f of a cell, involving one electron change is found to be 0.591 V at 25oC. The equilibrium constant of the reaction is (F = 96,500 C mol-1: R = 8.314 JK-1 mol-1)
A
1.0 $$\times$$ 101
B
1.0 $$\times$$ 1030
C
1.0 $$\times$$ 1010
D
1.0 $$\times$$ 105
EXAM MAP
Medical
NEET