1.0 g of a metal oxide gave 0.2 g of metal. Calculate the equivalent weight of the metal.

Explanation

Weight of oxygen `= 1.0-0.2 = 0.8g`
let the equivalent weight of metal (M) be E,EW (oxygen) = 8g
Equivalent of metl oxide = Equivalent of metal
`("Weight of Metal oxide")/(Ew(M) +Ew(O)) = ("Weight of oxygen")/(Ew(O))`
`= (1.0)/(E+8) = (0.8)/(8) = 0.1`
`0.1 (E+8) = 1.0 E = 2`