Two voltameters, one having a solution of silver salt and the other of a trivalent-metal salt, are connected in series and a current of `2 A` is maintained for `1.50 hours`. It is found that `1.00 g` of the trivalent metal is deposited. (a) What is the atomic weight of the trivalent metal? (b) How much silver is deposited during this period?
Atomic weight of silver is `109.9 g mol^(-1)`

Answer

A, B

Explanation

`w^1 = zit`
`rArr 1 = (At. Wt.)/(3xx96500)xx2xx1.5xx xx3600`
`= 26.8 g/mole`
` (E^1)/(E^2) = (W^1)/(w^2) (26.8)/(3xx107.9) = (1)/(W^2)`
`rArr W^2 = 12.1 g`