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QJEEM22Chb815: JEE Main 2022 Chemistry - Class 12 JEEM22Chb815 Solution: A dilute solution of sulphuric acid is electrolysed using a…

A dilute solution of sulphuric acid is electrolysed using a current of 0.10 A for 2 hours to produce hydrogen and oxygen gas. The total volume of gases produced a STP is _____________ cm3. (Nearest integer)

[Given : Faraday constant F = 96500 C mol −- 1 at STP, molar volume of an ideal gas is 22.7 L mol −- 1]

Step-by-Step Verified Solution

2 F2 \mathrm{~F} produces =32=\frac{3}{2} mole of gas

0.10×2×36000.10 \times 2 \times 3600 coulomb produces

amp;=32×0.1×2×36002×96500amp;=0.0056 moles of gas \begin{aligned}& =\frac{\frac{3}{2} \times 0.1 \times 2 \times 3600}{2 \times 96500} \\\\& =0.0056 \text { moles of gas }\end{aligned}

Volume of gas produced =0.0056×22.7 L=0.0056 \times 22.7 \mathrm{~L}

amp;≃0.127 Lamp;=127 mL\begin{aligned}& \simeq 0.127 \mathrm{~L} \\\\& =127 \mathrm{~mL}\end{aligned}

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