The electrode potential of Cu electrode dipped in 0.025 M CuSO4 solution at 298 K is:
(standard reduction potential of Cu = 0.34 V)
1. 0.047 V
2. 0.293 V
3. 0.35 V
4. 0.387 V
\(Cu(s)|Cu^{+2}(10^{-3} \ M) \ || \ Ag^{+}(10^{-5} \ M)|Ag(s)\)
if \(E_{Cu^{+2}/Cu}^{o} \ = \ +0.34 \ V\), and \(E_{Ag^{+}/Ag}^{o} \ = \ +0.80 \ V\)
Ecell will be:
1. 0.46 V
2. \(0.46-\frac{RT}{2F}ln10^{7}\)
3. \(0.46+\frac{RT}{2F}ln10^{7}\)
4. \(0.46-\frac{RT}{2F}ln10^{2}\)
Consider the following cell reaction
2Fe(s) + (g) + 4(aq) 2(aq) + 2(l)
E° = 1.67 V, At [] = 10 M, = 0.1 atm and pH = 3, the cell potential at 25 °C is :
1. 1.27 V
2. 1.77 V
3. 1.87 V
4. 1.57 V
The specific conductivity of a saturated solution of KI3 is 4.59 × 10-6 ohm-1 cm-1 and it's molar conductance is 1.53 ohm-1 cm2 mol-1. The Ksp Of KI3 will be :
1. 4 x 10-12
2. 27 x 27 x 10-9
3. 9 x 10-6
4. 4 x 10-6
A 100.0 mL dilute solution of Ag+ is electrolyzed for 15.0 minutes with a current of 1.25 mA and the silver is removed completely. The initial [Ag+] is :-
1. 2.32 x 10 M
2. 2.32 x 10 M
3. 2.32 x 10 M
4. 1.17 x 10 M
Consider the change in the oxidation state of Bromine corresponding to different emf values as shown in the diagram below:
\(\small{BrO_4^-\ \overset{1.82V}{\longrightarrow}\ BrO_3^-\ \overset{1.5V}{\longrightarrow} HBrO\ \overset{1.595V}{\longrightarrow}\ Br_2 \overset{1.0652V}{\longrightarrow}\ Br^-}\)
Then the species undergoing disproportionation is:-
1.
2.
3.
4. HBrO
On electrolysis of dilute sulphuric acid using Platinum (Pt) electrode, the product obtained at the anode will be:
1. Oxygen gas
2. gas
3. gas
4. Hydrogen gas
A fuel cell develops an electrical potential from the combustion of butane at 1 bar and 298 K
C4H10(g) + 6.5O2(g) → 4 CO2(g) + 5H2O(l); Eo of a cell is:
(Given )
1. 4.74 V
2. 0.547 V
3. 4.37 V
4. 1.09 V
A gas X at 1 atm is bubbled through a solution containing a mixture of 1 M Y- and 1 M Z- at 25 oC . If the reduction potential of Z > Y > X, then:
1. | Y will oxidize X but not Z. | 2. | Y will oxidize Z but not X. |
3. | Y will oxidize both X and Z. | 4. | Y will reduce both X and Z. |
for the reaction given below is:
()
1. -8.32 kJ
2. 8.32 kJ
3. 16.64 kJ
4. -16.64 kJ