When 1 Faraday current is passed, which of the following would deposit 1g atomic weight of the metal?
NaCl
BaCl2
AlCl3
CuSO4
An electrochemical cell reaction is : Pt, H2 (1 atm) | HCl(0.1 M) | |CH3COOH (0.1 M) | H2(1 atm), Pt. The e.m.f of this cell will not be zero, because
temperature is constant
e.m.f depends upon molarities of acids used
acids used in two compartments are different
pH of 0.1 M HCl and 0.1 M CH3COOH is not same
Among the properties (a) reducing (b) oxidising (c) complexing the set of properties shown by CN- ion towards metal species is
a, b
a, c
b, c
a, b, c
How many electrons will flow, when a current of 5 A is passed through a conductor for 200 seconds?
6.24 × 1021
6.24 × 1022
6.24 × 1023
6.24 × 1024
A Daniell cell is represented as Zn(s) + Cu2+(aq) →ºCu(s) + Zn2+(aq). The value of standard free energy change in the cell is (Eºcell = 1.1V),
300 kJ
-300 kJ
212.3 kJ
-212.3 kJ
The amount of chlorine evolved, when 2 A of current is passed fro 30 minutes in an aqueous solution of NaCl will be
1.32 g
4.56 g
9.82 g
12.6 g
Faraday constant
is a numerical constant
depends on equivalent
depends upon the current passed
depends on the number of electrons
The oxidation state of Cr in [Cr(NH3)4Cl2]+ is
+ 3
+ 2
+ 1
0
HNO2 acts both as reductant and oxidant, while HNO3 acts only as oxidant. Why?
solubility ability
maximum oxidation number
minimum oxidation number
minimum number of valence electron
What is the single electrode potential of zinc electrode in 0.01 M ZnSO4 solution at 25oC (Eo = -0.76 V)?
-0.82 V
-1.82 V
-2.82 V
-3.82 V
