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Electrochemistry question

2020 · Q89
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Electrochemistry question

2020 · Q89

NEETChemistryElectrochemistryMCQ+4 / −1
On electrolysis of dil. sulphuric acid using Platinum (Pt) electrode, the product obtained at anode will be :
  1. A
    Oxygen gas
  2. B
    H2S gas
  3. C
    SO2 gas
  4. D
    Hydrogen gas
View written solutionFree

Correct answer: A

During the electrolysis of dil. sulphuric acid using Pt electrodes following reaction will take place.
At cathode :
4H(aq)++4e−→2H2(g)4H_{(aq)}^ + + 4{e^ - } \to 2{H_{2(g)}}4H(aq)+​+4e−→2H2(g)​
At anode :
2H2O(I)→O2(g)+4H(aq)++4e−2{H_2}{O_{(I)}} \to {O_{2(g)}} + 4H_{(aq)}^ + + 4{e^ - }2H2​O(I)​→O2(g)​+4H(aq)+​+4e−
At the anode oxygen gas will be released.

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