COMEDK2024ChemistryElectrochemistry
A dilute solution of sulphuric acid is electrolysed using a current of 0.20 A for 4 hours to produce hydrogen and oxygen gas. The total volume of gas produced at STP is ........ cm ^3 [Nearest integer] [Given, Faraday constant F=96500 C / mol at STP molar volume of an ideal gas is 22.7 ~L / mol ] [in mL]
Options
- A512
- B516
- C530
- D508
Correct answer
D. 508
Step-by-step solution
At anode 2 H ₂ O O ₂(g)+4 H ⁺+4 e⁻ At cathode 2 H ₂ O +2 e⁻ H ₂( ~g )+2 OH ⁻ Now number of gram equivalent = Current Time Faraday constant aligned & = 0.2 4 60 60 96500 =0.0298 V_ O ₂ & = 0.0298 4 22.7=0.1693 V_ H ₂ & = 0.0298 2 22.7=0.3387 V_ Total & =V_ O ₂ +V_ H ₂ =0.5077=508 ~mL or CC aligned