When 50.0 mL of 0.400 M Ca(NO3) 2 is added to 50.0 mL of 0.800 M NaF,CaF2 precipitates,as shown in the net ionic equation below.The initial temperature of both solutions is 23.0°C.Assuming that the reaction goes to completion,and that the resulting solution has a mass of 100.00 g and a specific heat of 4.18 J/(g ∙ °C) ,calculate the final temperature of the solution.
Ca2+(aq) + 2 F-(aq) → CaF2(s) ΔH° = -11.5 kJ
A) 22.45°C
B) 23.55°C
C) 24.10°C
D) 24.65°C
Correct Answer:
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