NEET 2020
- Exam
- NEET
- Year
- 2020
- Subject
- Chemistry
- Chapter
- p Block Elements (Group 15, 16, 17 & 18)
NEET 2020 · Chemistry · p Block Elements (Group 15, 16, 17 & 18)
On electrolysis of dil. sulphuric acid using Platinum (Pt)...
On electrolysis of dil. sulphuric acid using Platinum electrode, the product obtained at anode will be
Options
- AOxygen gas
- B gas
- C gas
- DHydrogen gas
Correct answer
A. Oxygen gas
Step-by-step solution
Dissociation of sulfuric acid,
(\mathrm{H}}_{2} \mathrm{SO}}_{4} → 2 \mathrm{H}^{+}(\mathrm{aq})+\mathrm{SO}}_{4}^{-2}( \mathrm{aq}))
Disssociation of water,
(\mathrm{H}}_{2} )
At Anode: (4 2 \mathrm{H}}_{2} \mathrm{O}^{+}( \mathrm{l})+\mathrm{O}}_{2}(\mathrm{ g})+2 \mathrme^{-} \rightarrow \mathrm{H}}_{2}(\mathrm{ g}))