The oxide of a metal contains 47% oxygen. The bromide of the same metal contains 90% bromine. Calculate the equivalent weight of bromine

Hint:         Eq. wt. of metal =wt. of metal wt. of oxygen ×8=53×847=9.02Eq. wt. of bromine                                  = Eq. wt. of metal × wt. of bromine  wt. of metal =9.02×9010=81.18 Ans.