When a 8.26-g sample of gaseous hydrogen bromide dissolves in 36.2 g of water in a coffee-cup calorimeter the temperature rises from 25.00C to 82.14C. Calculate H in kJ/mol HBr for the solution process.
HBr(g) -> H+(aq) + Br-(aq)
The specific heat of water is 4.18 J/g-K.