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A current of 2.0A passed for 5 hours thr...

A current of 2.0A passed for 5 hours through a molten metal salt deposits 22.2 g of metal (At. Wt. =177). The oxidation state of the metal in the metal salt is

A

`+1`

B

`+2`

C

`+3`

D

`+4`

Text Solution

Verified by Experts

The correct Answer is:
C
`Q=2xx5xx60xx60=36000C`
Thus, 36000C deposit metal=22.2 g
`therefore96500C` will deposit metal
`=(22.2)/(36000)xx96500g=59.5g`
Thus, eq. wt. of the metal=59.5
Valency or ox. State=At. Wt./Eq. wt.
`=177//59.3=3`.
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