The Enthalpy of Hydration of AgBr Is -819 KJ $\degree$ CGiven That the Hydration Enthalpy of Br ^- Is

The enthalpy of hydration of AgBr is -819 kJ.mol ^{- 1} at 25 $\degree$ C.Given that the hydration enthalpy of Br ^- is -309 kJ.mol ^{- 1},calculate the enthalpy of hydration of Ag⁺ ions.

A) (-410 kJ.mol ^{- 1} )
B) (-819 kJ.mol ^{- 1} )
C) (-1128 kJ.mol ^{- 1} )
D) (-309 kJ.mol ^{- 1} )
E) (-510 kJF.mol ^{- 1} )