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JEE Main 202127 AugustEvening Shift
Exam
JEE Main
Year
2021
Date
27 August
Shift
Evening Shift
Subject
Chemistry
Chapter
Electrochemistry

JEE Main 2021 · 27 August · Evening Shift · Chemistry · Electrochemistry

The resistance of conductivity cell with cell constant 1 . 14 cm ^...

The resistance of conductivity cell with cell constant 1.14cm−11 . 14{cm}^{- 1}, containing 0.001MKCl0 . 001MKCl at 298K298K is 1500Ω1500Ω. The molar conductivity of 0.001MKCl0 . 001MKCl solution at 298K298K in Scm2mol−1S{cm}^{2}{mol}^{- 1} is (Integer answer)

Correct answer

760

Step-by-step solution

k=1R×ℓA=11500×1.14Scm−1k = \dfrac{1}{R} \times \dfrac{ℓ}{A} = \dfrac{1}{1500} \times 1 . 14S{cm}^{- 1}

⇒∧m=1000×(1.141500)0.001Scm2mol−1⇒ {∧}_{m} = 1000 \times \dfrac{\left(\dfrac{1 . 14}{1500}\right)}{0 . 001}S{cm}^{2}{mol}^{- 1}

=760Scm2mol−1⇒760= 760S{cm}^{2}{mol}^{- 1} ⇒ 760

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