Answer to Question #82341 in General Chemistry for Linda

Question

In the lab you mix 50.0 mL of 0.250 M Ca(NO3)2 with 50.0 mL of 0.500 M NaF in a coffee cup calorimeter to form a CaF2 precipitate. The initial temperature of each solution is 23 degrees celsius. Assuming that the final solution has a total mass of 100.0 g and a specific heat of 4.18 J/g degrees celsius, calculate the final temperature you expect for the solution. Assume no heat is lost to the calorimeter.

Ca2+ (aq) + 2F-(aq) --> CaF2 (s)
∆H° = -115 kJ/mol