When 500 ML of 0

question 31

Multiple Choice

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

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