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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

`4.68xx10^18`

B

`4.68xx10^15`

C

`4.68xx 10^12`

D

`4.68xx10^9`

Text Solution

Verified by Experts

The correct Answer is:
A
Quantity of electricity passed`=(25)/(1000)xx60=1.5`
`2F=2xx96500C` deposit `Ca=`1mole
`therefore1.5`C will deposit Ca=1mole
`therefore1.5C` will deposit `Ca=(1)/(2xx96500)xx1.5`mole
`=(1)/(2xx96500)xx1.5xx6.023xx10^(23)`atom`=4.68xx10^(18)`
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