The density of copper is 8.94 g m L - 1 . Find the charge needed to plate an area of 10 × 10 c m 2 to a thickness of 1 0 - 2 cm using a CuS O 4 solution as electrolyte (atomic weight of Cu = 63.6 g/mol).

W = M n F I t or ρ × V = M n F Q . Q = ρ × a r e a × t h i c k n e s s M × n F = 8.94 × 10 × 10 × 1 0 - 2 × 2 × 96500 63.6 = 2.7 × 1 0 4 C .

Chemistry - Electrochemistry Question with Solution | TestHub

ChemistryElectrochemistryMiscellaneous/MixedEasy2 minPYQ_2020

ChemistryEasysingle choice

The density of copper is 8.94 g $m L^{- 1}$ . Find the charge needed to plate an area of $10 \times 10 c m^{2}$ to a thickness of $1 0^{- 2}$ cm using a $CuS O_{4}$ solution as electrolyte (atomic weight of Cu = 63.6 g/mol).

Options:

Answer:

Solution:

$W = \frac{M}{n F} I t$

or $ρ \times V = \frac{M}{n F} Q .$

$Q = \frac{ρ \times a r e a \times t h i c k n e s s}{M} \times n F$

$= \frac{8.94 \times 10 \times 10 \times 1 0^{- 2} \times 2 \times 96500}{63.6}$

$= 2.7 \times 1 0^{4} C$ .

Stream:NTA_ABHYASSubject:ChemistryTopic:ElectrochemistrySubtopic:Miscellaneous/Mixed

⏱ 2mℹ️ Source: PYQ_2020

Doubts & Discussion

Loading discussions...