Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
+1 vote
1.7k views
in Electrochemistry by (33.4k points)
closed by

1. Explain the working of a H2 – O2 fuel cell. 

2. What are the advantages of fuel cells over other cells?

1 Answer

+1 vote
by (36.2k points)
selected by
 
Best answer

1. In H2 – O2 fuel cell, hydrogen and oxygen are bubbled through porous carbon electrodes into concentrated aqueous NaOH solution, which acts as the electrolyte. The electrode reactions are,

Anode : 2H2(g) + 4 OH-(aq) → 4 H2O(l) + 4\(\bar e\)

Cathode : O2(g) + 2 H2O(l) + 4\(\bar e\) → 4 OH-(aq)

Overall reaction : 2H2(g) + O2(g) → 2 H2O(l)

2. The advantages of fuel cells over other cells 

  • They are pollution free. 
  • More efficient than conventional methods. 
  • Runs continuously as long as the reactants are supplied. 
  • Electrodes are not affected. 

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

...