NCERT solutions for class 12 chemistry chapter 3 – Electrochemistry is now available for free download. The solutions are given in a PDF format which will. You can download Free Electrochemistry (NCERT Solutions) pdf from EduRev by using search above. You can also find Electrochemistry (NCERT Solutions). NCERT Solutions class 12 Chemistry ElectroChemistry In text question solutions are available in PDF format for free download. These ncert.
|Language:||English, Spanish, Arabic|
|ePub File Size:||18.70 MB|
|PDF File Size:||11.28 MB|
|Distribution:||Free* [*Regsitration Required]|
soundofheaven.info - No.1 online tutoring company in India provides you Free PDF download of NCERT Solutions for Class 12 Chemistry Chapter 3 - Electrochemistry. NCERT Solutions For Class 12 Chemistry Chapter 3 Electrochemistry. of Class 6 to 12 – Free PDF Solutions · NCERT Solutions for Class soundofheaven.info (Visit for all ncert solutions in text and videos, CBSE syllabus, Electrochemistry is that branch of chemistry which deals with the study of.
When the battery is in use, the following cell reactions take place: Your performance in the board exams will play a role in determining your admission into a good college. Share this on WhatsApp. The following is the order in which the given metals displace each other from the solution of their salts. What is the quantity of electricity in coulombs needed to reduce 1 mol of? Na, Ca, Mg and Al. The conductivity of a solution is the conductance of ions present in a unit volume of the solution.
Dissociation constant,. Therefore, electricity required to produce 20 g of calcium. Therefore, electricity required to produce 40 g of Al. A solution of Ni NO 3 2 is electrolysed between platinum electrodes using a current of 5 amperes for 20 minutes.
What mass of Ni is deposited at the cathode? Therefore, nickel deposited by C.
A steady current of 1. How long did the current flow?
What mass of copper and zinc were deposited? Therefore, 1. Therefore, Using the standard electrode potentials given in Table 3. The reaction with a higher value of takes place at the cathode.
Therefore, deposition of silver will take place at the cathode. The Ag anode is attacked by ions. Since Pt electrodes are inert, the anode is not attacked by ions. For dilute sulphuric acid, reaction i is preferred to produce O 2 gas.
But for concentrated sulphuric acid, reaction ii occurs. Therefore, deposition of copper will take place at the cathode. At the anode, the reaction with a lower value of is preferred.
All rights reserved. Page No Question 3.
Can you store copper sulphate solutions in a zinc pot? Hence, copper sulphate solution cannot be stored in a zinc pot. Calculate the potential of hydrogen electrode in contact with a solution whose pH is Calculate the emf of the cell in which the following reaction takes place: Applying Nernst equation we have: The cell in which the following reactions occurs: Calculate the standard Gibbs energy and the equilibrium constant of the cell reaction.
Why does the conductivity of a solution decrease with dilution? The molar conductivity of 0. Thus, dissociation constant: Then, Hence, number of electrons will flow through the wire. Suggest a list of metals that are extracted electrolytically. What is the quantity of electricity in coulombs needed to reduce 1 mol of?
Consider the reaction: The given reaction is as follows: Therefore, to reduce 1 mole of , the required quantity of electricity will be: When the battery is in use, the following cell reactions take place: The overall cell reaction is given by, When a battery is charged, the reverse of all these reactions takes place.
Suggest two materials other than hydrogen that can be used as fuels in fuel cells. Methane and methanol can be used as fuels in fuel cells.
Explain how rusting of iron is envisaged as setting up of an electrochemical cell. The reaction at the anode is given by, Electrons released at the anodic spot move through the metallic object and go to another spot of the object. The reaction corresponding at the cathode is given by, The overall reaction is: Hence, the rusting of iron is envisaged as the setting up of an electrochemical cell. Al, Cu, Fe, Mg and Zn. Mg, Al, Zn, Fe, Cu. Hence, the reducing power of the given metals increases in the following order: Further show: The galvanic cell in which the given reaction takes place is depicted as: Calculate the standard cell potentials of galvanic cells in which the following reactions take place: Write the Nernst equation and emf of the following cells at K: In the button cells widely used in watches and other devices the following reaction takes place: Molar conductivity: The variation of with for strong and weak electrolytes is shown in the following plot: The conductivity of sodium chloride at K has been determined at different concentrations and the results are given below: How much charge is required for the following reductions: How much electricity in terms of Faraday is required to produce i How much electricity is required in coulomb for the oxidation of i 1 mol of H 2 O to O 2.
According to the reaction: Predict the products of electrolysis in each of the following: The following reduction reactions compete to take place at the cathode. At the anode, the following processes are possible.
The following oxidation reactions are possible at the anode. Given that.
Calculate the standard Gibbs energy and the equilibrium constant of the cell reaction. Suggest a way to determine the value of water.
The molar conductivity of 0. Calculate its degree of dissociation and dissociation constant. If a current of 0. What is the quantity of electricity in coulombs needed to reduce 1 mol of?
Consider the reaction. Write the chemistry of recharging the lead storage battery, highlighting all the materials that are involved during recharging. Suggest two materials other than hydrogen that can be used as fuels in fuel cells. Explain how rusting of iron is envisaged as setting up of an electrochemical cell. Ncert solution class 12 Chemistry includes textbook solutions from both part 1 and part 2.