Verified Solution • 2025–26 Session moderate

QJEEM18Ch90d7: JEE Main 2018 Chemistry - Class 12 JEEM18Ch90d7 Solution: When an electric currents passed through acidified water, 112…

When an electric currents passed through acidified water, 112 mL of hydrogen gas at N.T.P. was collected at the cathode in 965 seconds. The current passed, in ampere, is :

Multiple Choice Options

  • A 1
  • B 0.5
  • C 0.1
  • D 2

Step-by-Step Verified Solution

Reaction at cathode :

2H+ + 2e− → H2

We know,

ω = zIt = EIt96500
<
no. of moles of H2 = 11222400

∴ mass (w) of H2 = 11222400 × 2

∴ 11222400 × 2 = 1×I×96596500

⇒ I = 1 A

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