English

Write Any Four Applications of Electrochemical Series

Advertisements
Advertisements

Question

Write any four applications of electrochemical series

Advertisements

Solution

applications of electrochemical series :

1. Oxidizing and Reducing Strengths.

2. Comparison of Reactivities of Metals

3. Calculation of the EMF of the Cell

4. Predicting the Liberation of Hydrogen Gas from Acids by Metals

5. Predicting Feasibility of a Redox Reaction

shaalaa.com
  Is there an error in this question or solution?
2013-2014 (October)

APPEARS IN

Video TutorialsVIEW ALL [1]

RELATED QUESTIONS

On calculating the strength of current in amperes if a charge of 840C (coulomb) passes through an electrolyte in 7 minutes, it will be

  • 1
  • 2
  • 3
  • 4

96500 coulombs correspond to the charge on how many electrons?


Using the E° values of A and B, predict which is better for coating the surface of iron [E°(Fe+2/Fe) = -0.44V] to prevent corrosion and why?

Given: E° (A+2/A)=-2.37 V: E°(B+2/B)= -0.14V


If a current of 0.5 ampere flows through a metallic wire for 2 hours, then how many electrons would flow through the wire?


How much charge is required for the following reduction?

1 mol of Al3+ to Al.


How much charge is required for the following reduction? 

1 mol of \[\ce{MnO^-_4}\] to Mn2+.


A solution of Ni(NO3)2 is electrolysed between platinum electrodes using a current of 5 amperes for 20 minutes. What mass of Ni is deposited at the cathode?


Three electrolytic cells A, B, C containing solutions of ZnSO4, AgNO3 and CuSO4, respectively, are connected in series. A steady current of 1.5 amperes was passed through them until 1.45 g of silver deposited at the cathode of cell B. How long did the current flow? What mass of copper and zinc were deposited?


On passing 1.5 F charge, the number of moles of aluminium deposited at cathode are _______ [Molar mass of Al = 27 gram mol–1]

(A) 1.0

(B) 13.5

(C) 0.50

(D) 0.75


Write any two uses of H2SO4


What is the ratio of volumes of H2 and O2 liberated during electrolysis of acidified water?

(A) 1 : 2

(B) 2 : 1

(C) 1 : 8

(D) 8 : 1


Write the name of the cell which is generally used in transistors. Write the reactions taking place at the anode and the cathode of this cell.


How many faradays of electricity are required to produce 13 gram of aluminium from aluminium chloride solution? (Given: Molar mass of Al = 27.0-gram mol–1)


How much quantity of electricity in coulomb is required to deposit 1.346 × 10-3 kg of Ag in 3.5 minutes from AgNO3 solution?
( Given: Molar mass of Ag is 108 × 10-3 kg mol-1 )


Electrolytic cell uses electrical energy to bring about ____________.


In the electrolysis of aqueous sodium chloride solution which of the half cell reaction will occur at anode?


What will happen during the electrolysis of aqueous solution of \[\ce{CuSO4}\] by using platinum electrodes?

(i) Copper will deposit at cathode.

(ii) Copper will deposit at anode.

(iii) Oxygen will be released at anode.

(iv) Copper will dissolve at anode.


When during electrolysis of a solution of AgNO3, 9650 coulombs of charge pass through the electroplating bath, the mass of silver deposited on the cathode will be ______.


On electrolysis of dilute sulphuric acid using platinum electrodes, the product obtained at the anode will be ______.


A current of 4 amp was passed for 2 hours through a solution of copper sulphate when 5.0 g of copper was deposited. The current efficiency is ______% (Cu = 63.5).


On passing electricity through nitrobenzene solution, it is converted into azobenzene. The mass of azobenzene is ______ mg, if the same quantity of electricity produces oxygen just sufficient to burn 96 mg of fullerene (C60


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×