While charging the lead storage battery ______________.
(i) PbSO4 anode is reduced to Pb.
(ii) PbSO4 cathode is reduced to Pb.
(iii) PbSO4 cathode is oxidised to Pb.
(iv) PbSO4 anode is oxidised to PbO2 .
While charging the lead storage battery ______________.
(i) PbSO4 anode is reduced to Pb.
(ii) PbSO4 cathode is reduced to Pb.
(iii) PbSO4 cathode is oxidised to Pb.
(iv) PbSO4 anode is oxidised to PbO2 .
-
1 Answer
-
This is a Multiple Choice Questions as classified in NCERT Exemplar
Ans: Correct Option: (i)
In the lead storage battery, a reverse reaction occurs and lead sulfate is formed at the anode, and at the cathode, it is converted into lead and lead oxide respectively. The reaction is as follows
At the cathode, the reaction goes this way,
PbSO4 (s)+2e−→Pb (s)+SO42− (aq), Reduction process
At the anode, the reaction goes this way,
PbSO4 (s)+2H2O→PbO2 (s)+SO42−+2H+ +2e, oxidation process
The overall reaction is as follows;
2PbSO4 (s)+2H2O→Pb (s)+PbO2 (s)+4H+ (aq)+2SO42− (aq)
Therefore, at anode lead sulfate is r
...more
Similar Questions for you
n = 3
t = 3 * 1580
= 4740 years
The following are the real-world applications of electrochemistry - military applications such as thermal batteries, digital watches, hearing aids, digital cameras, electrical appliances such as cellphones, and torches.
It depends on students. Though it is not a tough chapter to study but for students who have misconceptions and those who struggle with visualization can find it challenging.
There are two types of electrochemical cells - Electrolytic and Galvanic or Voltaic cells. The electrolytic cells need an external source such as AC power source or DC battery and it involve non-spontaneous reactions. The galvanic cells gets its energy from redox reactions which is spontaneous.
Redox reactions is the basic principle of the electrochemistry. The redox reactions is the process where electrons are transferred between substances. In this process chemical energy gets converted into electrical energy and vice versa.
Taking an Exam? Selecting a College?
Get authentic answers from experts, students and alumni that you won't find anywhere else
Sign Up on ShikshaOn Shiksha, get access to
- 65k Colleges
- 1.2k Exams
- 687k Reviews
- 1800k Answers