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how many minutes will it take to plate out 2.19 g of chromium metal from a solution of cr3 using a current of 55.2 amps in an electrolyte cell?

Sagot :

3.69 minutes will be needed to plate the chromium metal in the solution.

The charge transfer amount may be provided by:

q = It

where I is the current, t is the time, and q is the charge transfer

Q can be calculated by:

Moles of Cr = 0.0423 mole; As, moles = 2.19/51.9

Also, there is transfer of 3 electrons, thus, charge transfer will be faraday constant multiplied by 3

Charge transfer = 0.0423 *3*  96500 C

Charge transfer = 12245.85 C

As, q = it

12245.85 = 55.2 * Time

Time = 221.845 sec = 3.69 min

To know more about electrolyte cell, click here,

brainly.com/question/861659

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