degree of dissociation formula in electrochemistry

Which of the following statement is not correct about an inert electrode in a cell? Unlike dry cell, the mercury cell has a constant cell potential throughout its useful life. The degree of dissociation of week electrolyte increases as_____? How does the density of the electrolyte change when the battery is discharged? ANTHE helps students to know their potential at All India Level and prepare under the expert guidance of Aakash. The quantity of charge required to obtain one mole of aluminium from Al. (iii) changes with temperature of electrolyte. NaCl solution) be affected when it is electrolysed? Applications of Kohlaransch’s Law 1) To calculate Λ° m of weak electrolytes. It is defined as the product of the initial concentration of the reactant and the degree of dissociation; Now suppose you have a reaction like this $$\ce{A->B + C}$$ The initial state of A is always the concentration of A (should be given in the question) while initial moles of … Conductivity of an electrolytic solution depends on ____________. Plus Two Chemistry Notes Chapter 3 Electrochemistry is part of Plus Two Chemistry ... Y+ and V. are number of cations and anions from a formula unit of the electrolyte. (adsbygoogle = window.adsbygoogle || []).push({}); is the Pakistani Top Mcqs website, where you can find Mcqs of all Subjects, You can also Submit Mcqs of your recent test and Take online Mcqs Quiz test. and answer the questions (i) to (vi) given below. Use the data given in Q.8 and find out the most stable ion in its reduced form. If an opposing potential of 1.1V is applied to this cell, what will happen to the cell reaction and current flowing through the cell? (iv) Conductivity of solution increases with temperature. When will the maximum work be obtained from a galvanic cell. CBSE Important Questions for Class 12 Chemistry, NCERT Important Questions for Class 12 Chemistry, MP Board Question Paper Class 12th 2020 for Travel and Tourism, MP Board Question Paper Class 12th 2020 for Retail, MP Board Question Paper Class 12th 2020 for Physical Education and Sports, MP Board Question Paper Class 12th 2020 for Health Care, Class 12 Important Questions for Chemistry - Chemical Kinetics. In an aqueous solution how does specific conductivity of electrolytes change with addition of water? Solutions of two electrolytes ‘A’ and ‘B’ are diluted. Why is alternating current used for measuring resistance of an electrolytic solution? Which cell will measure standard electrode potential of copper electrode? Write the cell reaction of a lead storage battery when it is discharged. Can absolute electrode potential of an electrode be measured? What is the relationship between Gibbs free energy of the cell reaction in a galvanic cell and the emf of the cell? Choose the correct answer out of the following choices. An electrochemical cell can behave like an electrolytic cell when ____________. Here we have provided NCERT Exemplar Problems Solutions along with NCERT Exemplar Problems Class 12. Tutorial sheet-II Electrochemistry (Degree of Dissociation) 1. (e) converts energy of combustion into electrical energy. The positive value of the standard electrode potential of Cu, (i) this redox couple is a stronger reducing agent than the H, (ii) this redox couple is a stronger oxidising agent than H. (i) In dilute sulphuric acid solution, hydrogen will be reduced at cathode. How will the E. What advantage do the fuel cells have over primary and secondary batteries? Note : In the following questions a statement of assertion followed by a statement of reason is given. Required fields are marked *. (ii) changes with change of concentration of electrolyte. Pressure increases B. Dilution decreases C. Dilution increases D. None. Thus a lower value of pK a which -logK a will resemble a stronger acid. Aqueous copper sulphate solution and aqueous silver nitrate solution are electrolysed by 1 ampere current for 10 minutes in separate electrolytic cells. … 5. Electrochemistry Electrochemistry. Will the mass of copper and silver deposited on the cathode be same or different? Your email address will not be published. Electrochemistry deals with the study of electrochemical processes and their applications which involve: i) the conversion of electrical energy into chemical energy and . Depict the galvanic cell in which the cell reaction is Cu + 2Ag, Value of standard electrode potential for the oxidation of Cl. (iii) In dilute sulphuric acid solution, water will be oxidised at anode. Similarly weak electrolyte the molar conductivity increases gradually with an increase in the concentration. (iii) concentration of electrolytes in solution. Write the Nernst equation for the cell reaction in the Daniel cell. A galvanic cell has electrical potential of 1.1V. Hence, Where ‘u’ are ionic mobilities at infinite dilution. How will the pH of brine (aq. A. Chemistry Important Questions Class 12 are given below. Assertion : Mercury cell does not give steady potential. What will be the polarity of electrodes ‘A’ and ‘B’ in the electrolytic cell? IF YOU THINK THAT ABOVE POSTED MCQ IS WRONG. Which of the statements about solutions of electrolytes is not correct? (iv) Both assertion and reason are false. Reason : For weak electrolytes degree of dissociation increases with dilution of solution. (ii) In concentrated sulphuric acid solution, water will be oxidised at anode. While charging the lead storage battery ______________. (iv) It provides surface for redox reaction. (ii) Conductivity depends upon viscosiy of solution. (b) does not involve any ion in solution and is used in hearing aids. Question from very important topics are covered by NCERT Exemplar Class 12. (i) It does not participate in the cell reaction.

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