1. Tardigrade
  2. Question
  3. Chemistry
  4. Quantity of electricity required to reduced 0.1 mole of Cr2O7- 2 to Cr+ 3 completely is:-

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. Quantity of electricity required to reduced $0.1$ mole of $Cr_{2}O_{7}^{- 2}$ to $Cr^{+ 3}$ completely is:-

NTA AbhyasNTA Abhyas 2022

Solution:

$1$ mole of $Cr _2 O _7^{-2}$ required $6$ moles of electrons
$\therefore 0.1$ mole $Cr _2 O _7^{-2}$ will required $0.6$ moles of electrons
$0.6$ mole $e ^{-}=0.6 \times 96500= 57900\, C $ Charge