If 200 ml of aqueous 0.862 m hcl is mixed with 20. ml of aqueous 0.431 m ba(oh)2 in a constant-pressure calorimeter of negligible heat capacity, the initial temperature of both solutions is the same at 20.48ºc. the neutralization reaction h+(aq) + oh–(aq) → h2o(l) has a δhº = –56.2 kj/mol.

what is the final temperature of the mixed solution? (assume all solutions have a density of 1.00 g/cm3 and a specific heat capacity of 4.184 j/g•ºc)