KCET2024ChemistryElectrochemistry
How many coulombs are required to oxidise 0.1 mole of H ₂ O to oxygen?
Options
- A1.93 10^5 C
- B1.93 10^4 C
- C3.86 10^4 C
- D9.65 10^3 C
Correct answer
B. 1.93 10^4 C
Step-by-step solution
The reaction involved is a follows H ₂ O H ₂+ 1 2 O ₂+2 e⁻ So, from the equation it is clear that 1 mole of H ₂ O required 2 Faradays =2 96500 C So, 0.1 mole of H ₂ O will require = 2 96500 0.1 1 aligned & =19300 C & =1.93 10^4 C aligned