EASY
Earn 100

Explain the working of Daniel cell with a neat diagram.

Important Questions on Electrochemistry

MEDIUM

Depict the galvanic cell in which the reaction takes place. Further show, which of the electrode is negatively charged.

Zns+2Ag+aqZn2+aq+2Ags.

EASY
A galvanic cell transforms the energy released by a spontaneous redox reaction into electrical energy that can be used to perform work. In a galvanic cell, electrons flow from
EASY
Give two points of differences between electrochemical and electrolytic cells.
MEDIUM
What is salt bridge? Mention its functions.
EASY
Question Image
ECu2+|Cu0=+0.34 V
EZn2+|Zn0=0.76 V
Identify the incorrect statement from the options below for the above cell:
MEDIUM

Represent a cell consisting of Mg2+ | Mg half cell and Ag+ | Ag half cell and write the cell reaction.

(E°Ag=0.799 V, E°Mg=-2.37 V)

MEDIUM

The following reaction takes place at 298 K in an electrochemical cell involving two metals A and B,

A2+aq+BsB2+aq+As

with A2+=4×10-3 M and B2+=2×10-3 M in the respective half-cells, the cell EMF is 1.091 V. The equilibrium constant of the reaction is closest to;

EASY

Daniell cell converts the chemical energy liberated during the redox reaction to electrical energy.

Zns+Cu2+aq                 Zn2+aq+Cus; Ecell=1.1 V

Identify the anode and cathode in Daniell cell.

MEDIUM
What is a salt bridge? Give two functions of salt bridge?
EASY
What is salt bridge? Give its two functions.
MEDIUM
What are galvanic cells? Explain the working of a galvanic cell with a neat sketch taking Daniel cell as example.
HARD

For the cell Zn sZnSO4 aqCuSO4 aqCu s, when the concentration of Zn2+ is 10 times the concentration of Cu2+, the expression for ΔG in J mol-1 is

[F=Faraday's constant, R=universal gas constant, T=temperature, Eocell=1.1 V]

MEDIUM
Draw the diagram of the arrangement of apparatus to show that acid solution in water conducts electricity and label the battery. 
MEDIUM
What is electrochemical cell? Explain its working with the help of diagram.
MEDIUM
An electrochemical cell can behave like an electrolytic cell when ______.
MEDIUM
Write the cell reaction for the following cells.
(a) Fe|Fe2+||H2SO4|H2Pt
(b) PtH2 |HCl|Cl2Pt
HARD

In the given figure the experiment of conductivity solution is shown. Label against 1,2,3,4 and 5.

Question Image

EASY

At 298 K, the e.m.f. of the galvanic cell mentioned below is E0=1.1 V

ZnsZn2+10-3MCu2+0.1MCus

EASY
The standard Gibbs energy for the given cell reaction in kJ mol-1 at 298 K is:
Zns+Cu2+aqZn2+aq+Cu(s) ,
E0=2 V at 298 K
(Faraday's constant ,F=96000 C mol-1)