A certain current liberates `0.5g` of hydrogen in 2 hours. How many grams of copper can be liberated by the same current flowing for the same time in a copper sulphate solution ?

Options

A. ` 12.7 g`
B. ` 15.9 g`
C. ` 31.8 g`
D. ` 45 g`

Answer

C

Explanation

`("Weight of" Cu)/("Weight of" H_2) = (Eq."weifht" of Cu)/(Eq."weight" . Of H)`
`("Weight of" Cu)/(0.50) = ( 63.6//2)/1`
Weight of ` Cu = 15.9 g`.