Calculate the e.m.f. of the following cell at `298K :`
`Pt(s)|Br_(2)(l)|Br^(-)(0.010M)||H^(+)(0.030M)|H_(2)(g)(1"bar")|Pt(s)`
Given `: E_((1)/(2)Br_(2)//Br^(-))^(@)=+1.08V`.