A current of 0.1A was passed for 4hr thr...

A current of 0.1A was passed for 4hr through a solution of cuprocyanide and 0.3745 g of copper was deposited on the cathode. Calculate the current efficiency for the copper deposition. (Cu GAM 63.5 or Cu-63.5)

A

`79%`

B

`39.5%`

C

`63.25%`

D

`63.5%`

Text Solution

Verified by Experts

The correct Answer is:

A

m(theoretical)`=(63.5xx0.1xx7200)/(96500)=0.4738g`
`therefore%` efficiency `=(0.3745)/(0.4738)xx100=79%`

Topper's Solved these Questions

ELECTROCHEMISRY
RESONANCE ENGLISH|Exercise CBSE Problems|34 Videos
ELECTRO CHEMISTRY
RESONANCE ENGLISH|Exercise PHYSICAL CHEMITRY (ELECTROCHEMISTRY)|53 Videos
EQUIVALENT CONCEPT & TITRATIONS
RESONANCE ENGLISH|Exercise Part -IV|22 Videos

Similar Questions

Explore conceptually related problems

A current of 2A was passed for 1.5 hours through a solution of CuSO_(4) when 1.6g of copper was deposited. Calculate percentage current efficiency.

3A current was passed through an aqueous solution of an unknown salt of Pd for 1hr. 2.977 g of Pd^(+n) was deposited at cathode. Find n.

A 5A current in passed through a solution of zinc sulphate for 40 min . The amount of zinc deposited at the cathode is

A current of 3 amperes was passed through silver nitrate solution for 125 seconds. The amount of silver deposited at cathode was 0.42 g. Calculate the equivalent mass of silver.

A current of 4A is passed through a molten solution for 45 min. 2.977 g of metal is deposited. Calculate the charge carried by the metal cation if its atomic mass is 106.4 g/mol.

The same current if passed through solution of silver nitrate and cupric salt connected in series. If the weights of silver deposited is 1.08g . Calculate the weight of copper deposited

When 0.04 F of electricity is passed through a solution of CaSO_(4) , then the weight of Ca^(2+) metal deposited at the cathode is

2.5 faradays of electricity is passed through solution of CuSO_(4) . The number of gram equivalents of copper depsoited on the cathode would be

A current of 2.68 A is passed for 1.0 hour through an aqueous solution of CuSO_(4) using copper electrodes. Which of the following statements is // are correct ?

RESONANCE ENGLISH-ELECTROCHEMISRY-Advanced Level Problems

Wlhich of the following cell can produce more electrical work?
Text Solution
|
The enthalpy change for chemical reaction is denoted as DeltaH^(Theta)...
Text Solution
|
A current of 0.1A was passed for 4hr through a solution of cuprocyanid...
Text Solution
|
A resistance of 50Omega is registered when two electrodes are suspende...
Text Solution
|
Calculate the cell EMF is mV for Pt|H(2)(1 atm)|HCl(0.01M)|AgCl(s)|A...
Text Solution
|
Value of Lambdamoo for SrCl2 in water at 25^@ from the following data ...
Text Solution
|
A current is passed through 2 voltmeters connected in series. The firs...
Text Solution
|
Which of the following is not true about emf of a cell?
Text Solution
|
The number of electrons delivered at the cathode during electrolysis b...
Text Solution
|
During the electrolysis of an aqueoius nitric acid solution using pt e...
Text Solution
|
How many gm of silver will be displaced from a solution of AgNO(3) by ...
Text Solution
|
The number of Faradays required to deposit 1g equivalent of aluminium ...
Text Solution
|
How many electrons will flow when a current of 5 amperes is passed thr...
Text Solution
|
A current of 9.95 amp following for 10 minutes, deposits 3 gm of a met...
Text Solution
|
Which of the following has been universally accepted as a reference el...
Text Solution
|
A certain current liberates 0.5g of hydrogen in 2 hours. How many gra...
Text Solution
|
The specific conductance of a saturated solution of Ag CI is K omega^(...
Text Solution
|
Which of the following statements are correct?
Text Solution
|
In the process of electroplating m gram of silver is deposited when 4 ...
Text Solution
|
A spoon to be electroplated with gold should be
Text Solution
|