A quantity of 100 mL of .5M of HCl (aq) is mixed with 100 mL of .5M of NaOH (aq) in a constant pressure calorimeter. The initial temperature of the solutions is 22.30 C and the final temperature of the mixed solution is 25.00 C. What is "q" for solution and "q" for reaction?

2 answers

Calculate the Temperature Final - the Temperature Initial and use it to set up both problems separately to get your answer. See an example in your book, too.
q for soln is

q = mass liquid x specific heat x delta T.
I'm not sure what you mean by q rxn.