ANSWERS OF NUMERICAL PROBLEMS MUST END WITH PROPER. UNITS. • QUESTIONS . Differences between electrochemical reaction and electrolysis. Electrochemistry Problems. 1). Given the E° for the following half-reactions: Cu. +. + e. -. → Cu°. E°red = V. Cu. 2+. + 2e. -. → Cu°. E°red = V. What is E°. Ten things to know before working electrochemistry problems: 1. Oxidation- Reduction Reactions. Every electrochemical reaction must involve a chemical system.

Author: Matilar Arall
Country: Slovenia
Language: English (Spanish)
Genre: Travel
Published (Last): 8 January 2013
Pages: 483
PDF File Size: 3.94 Mb
ePub File Size: 20.61 Mb
ISBN: 971-2-51284-801-3
Downloads: 80050
Price: Free* [*Free Regsitration Required]
Uploader: Shaktir

A sec B sec C sec D sec Sol. Assume that there is no increase in the degree of dissociation of A and B mixing Sol. What mass of Ni is deposited at the cathode?

Practice Questions(Solved) – Electrochemistry, Class 12, Chemistry

The products formed at either electrode is given in terms of Faraday’s laws of electrolysis i. Assume the volume of the solution remains constant during electrolysis. Calculated the molar conductivity of the copper sulphate solution. Corrosion Corrosion Table of Content Introduction to On what factors does the value of slope depend?

  IRCA 2245 PDF

Negative value shows that the reaction will proceed from right to left, i. Find out the conc. Why do I need to sign in? You can see some Practice Questions Solved – Electrochemistry, Class 12, Chemistry sample questions with examples at the bottom of this page.

Since, the value of cell potential is positive, the reaction will proceed spontaneously in forward direction.

Electrochemistry questions (practice) | Khan Academy

Anode of electrolytic cell is the electrode at which de-electronation takes place whereas at cathode electronation is noticed. The concentration of CuSO 4 left in solution is. The ratio in mol in which the metals Ag, Ni and Cr will be deposited is- A 1: What will be the molarity of solution at the end of electrolysis?

One molecule of the salt gives Fe 22Al 34SO 4 -2 ions. No substance is lost during electrolysis. Calculate [H ] at positive electrode.

Practice Questions(Solved) – Electrochemistry, Class 12, Chemistry Class 12 Notes | EduRev

MOB20 View Course list. Stronger is oxidant, weaker is its conjugate reductant and vice-versa. A unpredictable B – DearPreparing for entrance numericlas Thus, there will be no change in conc. The ratio in mol in which the metals Ag, Ni and Cr will be deposited is.


The electrolysis of Ni NO 3 2 in presence of Ni electrode will bring in following changes: The oxidation state of the metal in the metal salt is: Identify the only incorrect statement regarding the quantitative estimation of aqueous Fe NO 3 2.

The electrode reactions are: The equivalent conductivity of the salt at infinite dilution is- A ohm -1 cm 2 eq -1 B ohm -1 cm 2 eq -1 C 60 ohm -1 cm 2 eq -1 D ohm -1 cm 2 eq -1 Sol. Calculate solubility product of AgI.

The current passed, in amperes, is- A 1. Share with a friend.

A current of 3. During the same period, 1 g equivalent of NaOH should have been formed.