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How many atoms of calcium will be deposi...

How many atoms of calcium will be deposited from a solution of `CaCl_(2)` by a current of 5mA flowig for 60s?

A

`4.68 xx 10^(18)`

B

`4.68 xx 10^(15)`

C

`4.68 xx 10^(12)`

D

`4.68 xx 10^(9)`

Text Solution

Verified by Experts

The correct Answer is:
A
Quantity of electricity passed= `25/(1000)xx60=1.5`
`2F=2xx96500C` deposit Ca= 1 mole
`therefore1.5` C will deposit `Ca=1/(2xx96500)xx1.5" mole"`
`=1/(2xx96500)xx1.5xx6.022xx10^(23)` atoms `=4.68xx10^(18)`
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