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Chemistry - Electrochemistry Question with Solution | TestHub

ChemistryElectrochemistryGalvanic cells/Nernst Equation/Concentration CellsMedium2 minPYQ_2020

ChemistryMediumsingle choice

The number of Faradays(F) required to produce $20 g$ of calcium from molten ${CaCl}_{2}$ (Atomic mass of $Ca = 40 g {mol}^{- 1}$ ) isNEET 2020 (Phase 1)

Options:

Answer:

Solution:

${Ca}^{+ 2} + 2 e^{-} \to Ca (s)$
Valency Factor $= 2$
As per Faraday's $1^{st}$ law, Charge passed in Faraday $=$ Number of gram equivalent of product.
$= \frac{20}{40} \times 2 = 1 F$

Stream:NEETSubject:ChemistryTopic:ElectrochemistrySubtopic:Galvanic cells/Nernst Equation/Concentration Cells

⏱ 2mℹ️ Source: PYQ_2020

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