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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=Ixxt=2xx5xx60xx60 =36000 C`
`M^(n+)+underset(nxx96500 C)("ne"^(-)) to underset(1 "mol" =177 g)(M)`
`n xx 96500 C` deposit metal=`(177xx36000)/(nxx96500)`
`=(177xx360)/(965 xx n)`
`(177xx360)/(965 xx n)`=22.2
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