Recent questions and answers in Electrochemistry

The amount of electricity that can deposit $108\;g$ of silver from silver nitrate solution is

answered May 11, 2018 by aabhakalsi

2 answers

How to prevent the Rusting of iron ? 

answered Jun 16, 2017 by pady_1

1 answer

Define Corrosion. Explain the factors affecting corrosion.

asked Jun 16, 2017 by pady_1

1 answer

How to predict products of Electrolysis ? 

answered Jun 16, 2017 by pady_1

1 answer

Explain the Factors Affecting Conductivity.

answered Jun 15, 2017 by pady_1

1 answer

Explain products of electrolysis : 

answered Jun 15, 2017 by pady_1

1 answer

Give the laws of Faraday's 

answered Jun 15, 2017 by pady_1

1 answer

Explain Kohlraush's law of independent migration of ions : 

answered Jun 15, 2017 by pady_1

1 answer

What is molar conductivity and Equivalent conductivity 

answered Jun 15, 2017 by pady_1

1 answer

What is molar conductivity and Equivalent conductivity 

answered Jun 15, 2017 by pady_1

1 answer

Explain the inverse of resistance and inverse of resistivity .  

answered Jun 15, 2017 by pady_1

1 answer

Explain the inverse of resistance and inverse of resistivity .  

answered Jun 15, 2017 by pady_1

1 answer

Give the relationship between standard electrode potential $E \theta$ and electrode  potential

asked Jun 15, 2017 by pady_1

1 answer

Justify the standard hydrogen electrode can act as both anode and cathode. 

answered Jun 13, 2017 by pady_1

1 answer

Justify the standard hydrogen electrode can act as both anode and cathode. 

answered Jun 13, 2017 by pady_1

1 answer

What are the types of electrode potential ?.  What is electrode potential and give the types of it . 

asked Jun 13, 2017 by pady_1

1 answer

What are the types of Redox reaction  Explain the types of Redox reaction 

answered Jun 13, 2017 by pady_1

1 answer

What is Redox reaction ? 

asked Jun 13, 2017 by pady_1

1 answer

What is Redox reaction ? 

asked Jun 13, 2017 by pady_1

0 answers

When one Faraday of electric current is passed , the mass deposited is equal to :

answered Feb 20, 2017 by sonukumarterasiya

4 answers

Consider the electrochemical cell :$Zn (s) / Zn^{2+} (aq) // Cu^{2+} (aq) / Cu.$ It has an electrical potential of 1.1 V when concentration of $Zn^{2+}$ and $Cu^{2+}$ ions is unity.State the direction of flow of electrones and also specify if Zinc and Copper aredeposited or dissolved at their respective electrodes. When :(a) an external opposite potential of 0.8 V is applied.(b) an external opposite potential of 1.1 V is applied.(c) an external opposite potential of 1.4 V is applied.

answered Dec 29, 2016 by sharmaaparna1

1 answer

(i) In a cell reaction, the equilibrium constant K is less than one. Is E° for the cell positive or negative ? (ii) What will be the value of K of $E^{\circ}$ cell = 0 ?

answered Dec 29, 2016 by sharmaaparna1

1 answer

Iron and nickel are used to make electro chemical cell by using a salt bridge to join a half cell containing $1\;M\;Fe^{2+}(aq)$ in which a strip of irons has been immersed to a second half cell which contain $1\;M\;Ni^{2+}(aq)$ in which a strip of Ni has been immersed ? A voltmeter is connected between the two metal strips : $E^{0} _{Fe^{2+}/Fe} =-0.44 V; \qquad E^{0} _{Ni^{2+}/Ni} =-0.25 V $ a) Write the name of the cathode and anode . b) Write the half reaction involved ? c) What would be the effect on the voltmeter reading if $Fe^{2+}$ concentration were increased ?

answered Nov 24, 2016 by meena.p

1 answer

Which of the following pair will have greater conduction and why ? (a) Copper wire at $25^{\circ}C$ and copper wire at $50^{\circ}C$. (b) $0.1\; M$ acetic acid solution or $1\;M$ acetic acid solution?

answered Nov 24, 2016 by meena.p

1 answer

The following curve is obtained when molar conductivity $(\lambda_m)$ is plotted against the square root of concentration for 2 electrolytes A and B (a) What can you say about the nature of the two electrolyte $A\; \&\;B$ (b) How do you account for the increase in molar conductivity $\lambda_m$ for the electrolyte A and B on dilution

answered Nov 22, 2016 by meena.p

1 answer

The conductivity of $0.20\;M$ solution of KCl at $298\;K$ is $0.0248 \;Scm^{-1}$ Calculate its molar conductivity

answered Nov 21, 2016 by meena.p

1 answer

Out of C and CO, Which is better reducing agent at $673\;k$

answered Nov 9, 2016 by meena.p

1 answer

Why is boiling point of water increased on addition of sodium chloride into it ?

answered Nov 4, 2016 by meena.p

1 answer

Calculate the equilibrium constant $K_c$ for the reaction . $3Sn^{4+} +2Cr \to 3Sn^{2+}+2Cr^{3+}$Given $E^0 =0.885\;V$

answered Nov 4, 2016 by meena.p

1 answer

What would happen if no salt bridge were used in an electro chemical cell (like Zn-Cu cell)?

answered Nov 3, 2016 by meena.p

1 answer

(a) Define molar conductivity of a solution and explain how molar conductivity changes with change in concentration of solution for a weak and a strong electrolyte (b) The resistance of a conductivity cell conatining $0.001\;M\;KCL$ Solution at $298\;K$ is $1500 \;\Omega$ . What is the cell constant if the conductivity of $0.001\;M\;KCl$ solution at $298\;K$ is $0.146 \times 10^{-3} \;S \;cm^{-1}$ ?

answered Nov 2, 2016 by meena.p

1 answer

Identify the anode and cathode in the cell written below :$Cu | Cu^{2+}| |Cl^{-} ||Cl_2, Pt$ write the reduction half reaction and oxidation half reaction of the cell

answered Nov 1, 2016 by meena.p

1 answer

What type of a battery is the lead storage battery ? write the anode and the cathode reaction occurring in a lead storage battery when current is drawn from it .

answered Oct 26, 2016 by meena.p

1 answer

Resistance of a conductivity cell filled with $0.1\;mol L^{-1}KCl$ solution is $100\;\Omega$ . If the resistance of the same cell when filled with $0.02\;molL^{-1}\;KCl$ Solution . The conductivity of $0.02\;mol L^{-1}KCl$ Solution . The conductivity of $0.1\;mol\;L^{-1}$ Solution is $1.29\;s/m$

answered Oct 26, 2016 by meena.p

1 answer

The resistance of the conductivity cell containing $0.001\;M\;KCl$ solution at $298\;K$ is $1500\Omega$. What is the cell constant if conductivity of $0.001\;M\;KCl$ solution at $298\;K$ is $0.14 \times 10^{-3} 5\;cm^{-1}? $

answered Oct 21, 2016 by meena.p

1 answer

Explain the role of (a) Cryolite in the electrolytic reduction of alumina . (b) carbon monoxide in the purification of nickel

answered Oct 21, 2016 by meena.p

1 answer

Out line the principle of the method used for refining of (a)Nickel (b)Zirconium (c) Tin

answered Oct 19, 2016 by meena.p

1 answer