A certain metal salt solution is electrolysed in series with a silver coulometer. The weights of silver ad the metal deposited are 0.5094 g and 0.2653 g. Calculate the valency of the metal if its atomic weight is nearly that of silver.

Answer

2

Explanation

`(W_(Ag))/(W_("metal"))=(E_(Ag))/(E_(M))=(108)/((108)/(n))=n`
`n=(0.5094)/(0.2653)=1.92`
`n=2`.